- Opinion polling for the 2010 United States Senate elections
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Polled races
AlabamaSenate
Incumbent: Richard Shelby(R)
Winner: Richard ShelbySource Date Democrat:
William BarnesRepublican:
Richard ShelbyElection Results November 2, 2010 35% 65% Rasmussen Reports September 21, 2010 30% 58% Rasmussen Reports August 19, 2010 28% 60% Rasmussen Reports July 22, 2010 29% 59% Rasmussen Reports May 25, 2010 31% 58% Daily Kos/Research 2K May 17–19, 2010 33% 57% Rasmussen Reports March 29, 2010 32% 59% 
AlaskaSenate
Incumbent: Lisa Murkowski (R)
Primary Date: August 24Source Date Democrat:
Scott McAdamsRepublican:
Joe MillerWrite-In (R):
Lisa MurkowskiPublic Policy Polling October 30–31, 2010 30% 37% 30% Hays Research October 29–31, 2010 26% 27% 25%* Dittman Research October 23–28, 2010 23% 27% 37% Hellenthal & Associates/Alaskans Standing Together October 25–27, 2010 24% 30% 46% Hays Research October 25–26, 2010 29% 23% 34% * CNN/Time Magazine October 15–19, 2010 22% 36% 38% Rasmussen Reports October 13, 2010 27% 35% 34% Public Policy Polling/Daily Kos October 9–10, 2010 26% 35% — 26% 35% 33% National Research/Club for Growth October 8–9, 2010 27% 33% 31% CNN/Time Magazine September 24–28, 2010 22% 38% 36% Ivan Moore Research September 23–27, 2010 28% 43% 18% Craciun Research September 24–25, 2010 19% 30% 41% Rasmussen Reports September 19, 2010 25% 42% 27% Rasmussen Reports August 31, 2010 44% 50% — Dittman Research August 30, 2010 19% 31% 37% Basswood Research August 28–29, 2010 36% 52% — Public Policy Polling August 27–28, 2010 39% 47% — 22% 38% 34% - Referred to as the write in candidate.
ArizonaSenate
Incumbent: John McCain (R)
Winner: John McCainSource Date Democrat:
Rodney GlassmanRepublican:
John McCainIndependent:
David NolanElection Results November 2, 2010 35% 59% 5% Rasmussen Reports October 28, 2010 32% 52% Public Policy Polling/Daily Kos October 23–24, 2010 38% 56% Behavioral Research Center October 1–10, 2010 22% 56% Rasmussen Reports October 3, 2010 33% 54% Rasmussen Reports September 7, 2010 37% 51% Rasmussen Reports August 25, 2010 31% 53% Rasmussen Reports July 29, 2010 34% 53% Rasmussen Reports May 17, 2010 28% 57% Daily Kos/Research 2K May 3–5, 2010 35% 48% Public Policy Polling April 23–25, 2010 33% 49% Behavioral Research Center April 12–25, 2010 24% 46% Rasmussen Reports April 13, 2010 32% 54% Daily Kos/Research 2K March 29–31, 2010 33% 52% 
ArkansasSenate
Incumbent: Blanche Lincoln(D)
Winner: John BoozmanSource Date Democrat:
Blanche LincolnRepublican:
John BoozmanElection Results November 2, 2010 37% 58% Rasmussen Reports October 28, 2010 36% 55% University of Arkansas October 8–20, 2010 35% 54% Mason Dixon/Stephens Media October 15–19, 2010 34% 55% CNN/Time Magazine October 15–19, 2010 42% 53% Rasmussen Reports September 30, 2010 37% 55% Ipsos/Reuters September 17–19, 2010 39% 53% Talk Business/Hendrix College September 16, 2010 29% 56% Arkansas News Bureau/Mason Dixon September 12–14, 2010 34% 51% Rasmussen Reports August 18, 2010 27% 65% Rasmussen Reports July 20, 2010 35% 60% Ipsos/Reuters July 16–18, 2010 35% 54% Talk Business July 17, 2010 32% 57% Magellan Strategies July 12, 2010 29% 60% Benenson Strategy Group June 22–24, 2010 36% 45% Rasmussen Reports June 15, 2010 32% 61% Daily Kos/Research 2K May 24–26, 2010 38% 58% Rasmussen Reports May 19, 2010 28% 66% Daily Kos/Research 2K May 10–12, 2010 40% 54% Mason-Dixon May 3–5, 2010 35% 52% Daily Kos/Research 2K April 26–28, 2010 42% 52% Rasmussen Reports April 26, 2010 29% 57% Daily Kos/Research 2K April 12–14, 2010 43% 50% Rasmussen Reports March 30, 2010 36% 51% Daily Kos/Research 2K March 22–24, 2010 42% 49% Rasmussen Reports March 1, 2010 39% 48% Rasmussen Reports February 1, 2010 35% 54% Public Policy Polling January 29–31, 2010 33% 56% 
CaliforniaSenate
Incumbent: Barbara Boxer(D)
Winner: Barbara BoxerSource Date Democrat:
Barbara BoxerRepublican:
Carly FiorinaElection Results November 2, 2010 52% 43% Public Policy Polling October 29–31, 2010 50% 46% YouGov October 28–31, 2010 49% 43% Survey USA October 26–31, 2010 46% 38% YouGov October 25–28, 2010 49% 42% Rasmussen Reports October 27, 2010 49% 46% CNN/Time Magazine October 20–26, 2010 53% 37% Field October 14–26, 2010 49% 41% Survey USA October 21–25, 2010 45% 40% Suffolk University October 21–24, 2010 52% 43% Fox News/Pulse Opinion Research October 23, 2010 48% 44% Public Policy Polling October 21–23, 2010 52% 43% Rasmussen Reports October 21, 2010 48% 46% University of Southern California/Los Angeles Times
Greenberg Quinlan Rosner/American ViewpointOctober 13–20, 2010 48% 40% Tarrance Group October 17–19, 2010 44% 44% Survey USA October 15–18, 2010 46% 44% PPIC October 10–17, 2010 43% 37% Fox News/Pulse Opinion Research October 16, 2010 48% 44% Wilson Research Strategies October 13–14, 2010 43% 46% Ipsos/Reuters October 12–14, 2010 47% 40% Rasmussen Reports October 13, 2010 49% 46% Angus Reid Public Opinion October 4–6, 2010 55% 39% Ipsos/Reuters October 2–4, 2010 49% 45% Rasmussen Reports October 3, 2010 49% 45% Survey USA September 30-October 3, 2010 46% 43% CNN/Time Magazine September 24–28, 2010 56% 37% PPIC September 19–26, 2010 42% 35% University of Southern California/Los Angeles Times
Greenberg Quinlan Rosner/American ViewpointSeptember 15–22, 2010 53% 38% Survey USA September 19–21, 2010 49% 43% Field September 14–21, 2010 47% 41% Rasmussen Reports September 20, 2010 47% 43% Fox News/Pulse Opinion Research September 18, 2010 47% 46% Public Policy Polling September 14–16, 2010 50% 42% Fox News/Pulse Opinion Research September 11, 2010 46% 44% CNN/Time Magazine September 2–7, 2010 48% 44% Rasmussen Reports September 6, 2010 47% 48% Survey USA August 31-September 1, 2010 46% 48% Rasmussen Reports August 24, 2010 44% 43% Survey USA August 9–11, 2010 42% 47% Rasmussen Reports August 3, 2010 45% 40% Public Policy Polling July 23–25, 2010 49% 40% PPIC July 6–20, 2010 39% 34% Rasmussen Reports July 12, 2010 49% 42% Survey USA July 8–11, 2010 45% 47% Reuters/Ipsos June 25–27, 2010 45% 41% CrossTarget/Pajamas Media June 13, 2010 47% 47% Rasmussen Reports June 9, 2010 48% 43% USC/Los Angeles Times May 19–26, 2010 44% 38% Public Policy Polling May 21–23, 2010 45% 42% Daily Kos/Research 2K May 17–19, 2010 48% 39% PPIC May 9–16, 2010 48% 39% Rasmussen Reports May 12, 2010 45% 38% Rasmussen Reports April 12, 2010 42% 38% PPIC March 9–16, 2010 44% 43% Field Research Corporation March 9–15, 2010 45% 44% Rasmussen Reports March 11, 2010 46% 40% Daily Kos/Research 2K March 8–10, 2010 49% 40% Rasmussen Reports February 11, 2010 46% 42% PPIC January 12–19, 2010 48% 40% Field Research Corporation January 5–17, 2010 50% 35% Rasmussen Reports January 14, 2010 46% 43% Rasmussen Reports November 17, 2009 46% 37% Field Research Corporation Sep. 18-Oct. 6, 2009 49% 35% 
ColoradoSenate
Incumbent: Michael Bennet(D)
Winner: Michael BennetSource Date Democrat:
Michael BennetRepublican:
Ken BuckPublic Policy Polling October 30–31, 2010 48% 49% Fox News/Pulse Opinion Research October 30, 2010 46% 50% Marist College/McClatchy October 26–28, 2010 45% 44% YouGov October 25–28, 2010 49% 45% RBI Strategies & Research/Colorado Pols October 24–26, 2010 43% 42% CNN/Time Magazine October 20–26, 2010 49% 44% Rasmussen Reports October 25, 2010 44% 48% Public Policy Polling October 21–23, 2010 47% 47% Denver Post/Survey USA October 19–21, 2010 47% 47% Ipsos/Reuters October 15–17, 2010 48% 42% Fox News/Pulse Opinion Research October 16, 2010 45% 46% Rasmussen Reports October 14, 2010 45% 47% Harstad Strategic Research October 3–4, 2010 44% 41% Rasmussen Reports October 3, 2010 45% 50% Public Policy Polling September 30-October 2, 2010 46% 45% Denver Post/Survey USA September 28–30, 2010 43% 48% McClatchy/Marist College September 26–28, 2010 42% 50% Rasmussen Reports September 27, 2010 43% 51% Fox News/Pulse Opinion Research September 25, 2010 43% 47% CNN/Time Magazine September 17–20, 2010 44% 49% Rasmussen Reports September 14, 2010 45% 49% Public Opinion Strategies August 28-September 1, 2010 43% 40% Rasmussen Reports August 29, 2010 44% 47% Ipsos/Reuters August 20–22, 2010 40% 49% Rasmussen Reports August 11, 2010 41% 46% Public Policy Polling August 7–8, 2010 46% 43% Survey USA/Denver Post July 27–29, 2010 43% 43% Rasmussen Reports July 26, 2010 42% 48% Rasmussen Reports July 8, 2010 39% 48% Survey USA/Denver Post June 15–17, 2010 43% 46% Rasmussen Reports June 7, 2010 41% 46% Public Policy Polling May 14–16, 2010 45% 39% Rasmussen Reports May 3, 2010 41% 48% Public Policy Polling March 5–8, 2010 46% 40% Rasmussen Reports March 2, 2010 38% 44% Rasmussen Reports February 2, 2010 41% 45% Rasmussen Reports January 13, 2010 38% 43% Daily Kos/Research 2K January 11–13, 2010 41% 38% Rasmussen Reports December 8, 2009 38% 42% 
ConnecticutSenate
Incumbent: Christopher Dodd(D)-retiring
Winner: Richard BlumenthalSource Date Democrat:
Richard BlumenthalRepublican:
Linda McMahonRasmussen Reports October 31, 2010 53% 46% Quinnipiac University October 25–31, 2010 53% 44% Public Policy Polling October 27–29, 2010 54% 43% YouGov October 25–28, 2010 51% 42% Merriman River Group/Capitol Report October 24–26, 2010 52% 44% Rasmussen Reports October 24, 2010 56% 43% Quinnipiac University October 18–24, 2010 54% 42% Fox News/Pulse Opinion Research October 23, 2010 53% 42% Suffolk University October 19–20, 2010 57% 39% Rasmussen Reports October 14, 2010 51% 46% Quinnipiac University October 7–11, 2010 54% 43% Fox News/Pulse Opinion Research October 9, 2010 49% 43% Rasmussen Reports October 5, 2010 54% 43% CNN/Time Magazine October 1–5, 2010 56% 37% Greenberg Quinlan Rosner October 3–4, 2010 53% 38% Merriman River Group/Capitol Report October 3, 2010 52% 45% Fox News/Pulse Opinion Research October 2, 2010 52% 42% Public Policy Polling September 30-October 2, 2010 53% 41% Rasmussen Reports September 26, 2010 50% 45% Quinnipiac University September 21–26, 2010 49% 46% Quinnipiac University September 8–12, 2010 51% 45% Rasmussen Reports September 9, 2010 53% 44% Rasmussen Reports August 11, 2010 47% 40% Quinnipiac University July 28-Aug. 2, 2010 50% 40% Rasmussen Reports July 15, 2010 53% 40% Quinnipiac University July 7–13, 2010 54% 37% Quinnipiac University June 2–8, 2010 55% 35% Rasmussen Reports June 1, 2010 56% 33% Quinnipiac University May 24–25, 2010 56% 31% Greenberg Quinlan Rosner May 19–20, 2010 55% 40% Rasmussen Reports May 18, 2010 48% 45% Rasmussen Reports May 4, 2010 52% 39% Rasmussen Reports April 7, 2010 55% 35% Quinnipiac University March 9–15, 2010 61% 28% Rasmussen Reports March 2, 2010 60% 31% Rasmussen Reports February 1, 2010 56% 36% Daily Kos/Research 2K January 11–13, 2010 56% 34% Quinnipiac University January 8–12, 2010 64% 23% Rasmussen Reports January 6, 2010 58% 34% Public Policy Polling January 4–5, 2010 60% 28% 
DelawareSenate
Incumbent: Ted Kaufman(D)-Retiring
Winner: Chris CoonsSource Date Democrat:
Chris CoonsRepublican:
Christine O'DonnellWrite In:
Mike CastleElection Results November 2, 2010 57% 40% Monmouth University October 25–27, 2010 51% 41% Fairleigh Dickinson University October 20–26, 2010 57% 36% Rasmussen Reports October 14, 2010 51% 40% Survey USA/University of Delaware October 11–12, 2010 54% 33% CNN/Time Magazine October 8–12, 2010 61% 32% Monmouth University October 8–11, 2010 57% 38% Magellan Strategies October 10, 2010 54% 36% Fox News/Pulse Opinion Research October 9, 2010 54% 38% Fairleigh Dickinson University September 27-October 3, 2010 53% 36% University of Delaware September 16–30, 2010 61% 37% Rasmussen Reports September 26, 2010 49% 40% 5% CNN/Time Magazine September 17–20, 2010 55% 39% Fox News/Pulse Opinion Research September 18, 2010 54% 39% Rasmussen Reports September 15, 2010 53% 42% Public Policy Polling September 11–12, 2010 50% 34% Rasmussen Reports September 2, 2010 47% 36% Daily Kos/Public Policy Polling August 7–8, 2010 44% 37% Rasmussen Reports August 5, 2010 49% 36% Rasmussen Reports July 14, 2010 39% 41% Daily Kos/Research 2K February 22–24, 2010 47% 31% 
FloridaSenate
Incumbent: George LeMieux(R)-Retiring
Winner: Marco RubioSource Date Democrat:
Kendrick MeekRepublican:
Marco RubioIndependent:
Charlie CristElection Results November 2, 2010 20% 49% 30% Public Policy Polling October 30–31, 2010 21% 47% 30% Sunshine State News
Susquehanna Polling & ResearchOctober 29–31, 2010 20% 48% 31% YouGov October 28–31, 2010 15% 43% 34% Quinnipiac University October 25–31, 2010 18% 45% 31% YouGov October 25–28, 2010 15% 38% 32% Rasmussen Reports October 27, 2010 16% 50% 30% Sunshine State News
Susquehanna Polling & ResearchOctober 26–27, 2010 23% 47% 27% Mason Dixon October 25–27, 2010 21% 45% 28% Quinnipiac University October 18–24, 2010 15% 42% 35% Zogby International October 18–21, 2010 18% 40% 33% Ipsos/Miami Herald
St. Petersburg TimesOctober 15–19, 2010 20% 41% 26% CNN/Time Magazine October 15–19, 2010 23% 39% 32% Rasmussen Reports October 18, 2010 20% 43% 32% Suffolk University October 14–17, 2010 22% 39% 31% Public Policy Polling October 9–10, 2010 21% 44% 33% Sunshine State News
Susquehanna Polling & ResearchOctober 6–10, 2010 22% 45% 29% Quinnipiac University October 6–10, 2010 22% 44% 30% Rasmussen Reports October 7, 2010 19% 50% 25% Mason Dixon October 4–6, 2010 21% 42% 27% Florida Chamber of Commerce
Public Opinion StrategiesSeptember 27–30, 2010 16% 40% 33% Zogby International September 27–29, 2010 18% 39% 33% Rasmussen Reports September 28, 2010 21% 41% 30% CNN/Time Magazine September 24–28, 2010 25% 38% 31% Quinnipiac University September 23–28, 2010 18% 46% 33% Mason Dixon September 20–22, 2010 23% 40% 28% Rasmussen Reports September 14, 2010 23% 41% 30% Ipsos/Reuters September 10–12, 2010 21% 40% 26% Fox News/Pulse Opinion Research September 11, 2010 21% 43% 27% CNN/Time Magazine September 2–7, 2010 24% 36% 34% Sunshine State News
Susquehanna Polling & ResearchSeptember 1–7, 2010 23% 43% 29% Frederick Polls August 28–31, 2010 17% 34% 35% Rasmussen Reports August 25, 2010 21% 40% 30% Public Policy Polling August 21–22, 2010 17% 40% 32% Quinnipiac University August 11–16, 2010 16% 32% 39% Mason Dixon August 9–11, 2010 18% 38% 33% Ipsos/Florida Newspapers August 6–10, 2010 17% 29% 33% Rasmussen Reports August 9, 2010 21% 38% 33% McLaughlin & Associates
Associated Industries of FloridaJuly 31-August 1, 2010 16% 36% 38% NYTimes/Florida Newspapers
University of South Florida PolytechnicJuly 24–28, 2010 12% 30% 41% Quinnipiac University July 22–27, 2010 13% 33% 39% Rasmussen Reports July 21, 2010 20% 35% 35% Public Policy Polling July 16–18, 2010 17% 29% 35% Ipsos/Reuters July 9–11, 2010 17% 28% 35% Rasmussen Reports July 6, 2010 15% 36% 34% Florida Chamber of Commerce June 9–13, 2010 14% 31% 42% Rasmussen Reports June 7, 2010 15% 37% 37% Quinnipiac University June 1–7, 2010 17% 33% 37% Ipsos/St. Petersburg Times/
Miami HeraldMay 14–18, 2010 15% 27% 30% Rasmussen Reports May 16, 2010 18% 39% 31% Mason Dixon May 3–5, 2010 19% 32% 38% Rasmussen Reports May 3, 2010 17% 34% 38% Public Opinion Strategies April 26–27, 2010 23% 28% 36% McLaughlin & Associates April 24–25, 2010 15% 29% 33% Rasmussen Reports April 21, 2010 22% 37% 30% Quinnipiac University April 8–13, 2010 24% 30% 32% Rasmussen Reports March 18, 2010 25% 42% 22% Daily Kos/Research 2K March 15–17, 2010 27% 32% 29% Public Policy Polling March 5–8, 2010 25% 34% 27% 
GeorgiaSenate
Incumbent: Johnny Isakson(R)
Winner: Johnny IsaksonSource Date Democrat:
Mike ThurmondRepublican:
Johnny IsaksonLibertarian:
Chuck DonovanElection Results November 2, 2010 39% 58% 3% Rasmussen Reports October 24, 2010 29% 59% 5% Survey USA October 21–24, 2010 34% 58% 5% Landmark Communications October 19, 2010 35% 56% 2% Rasmussen Reports October 6, 2010 38% 53% 5% Insider Advantage September 27, 2010 29% 61% 3% Rasmussen Reports September 21, 2010 36% 52% 5% Survey USA September 10–12, 2010 34% 56% 6% Insider Advantage August 18, 2010 35% 47% 7% Rasmussen Reports August 11, 2010 41% 55% — Rasmussen Reports May 20, 2010 30% 57% — Rasmussen Reports April 22, 2010 35% 51% — Daily Kos/Research 2K April 5–7, 2010 26% 53% — 
HawaiiSenate
Incumbent: Daniel Inouye(D)
Winner: Daniel InouyeSource Date Democrat:
Daniel InouyeRepublican:
Campbell CavassoElection Results November 2, 2010 75% 22% Rasmussen Reports October 13, 2010 53% 40% Public Policy Polling/Daily Kos October 2–3, 2010 65% 29% 
IdahoSenate
Incumbent: Mike Crapo(R)
Winner: Mike CrapoSource Date Democrat:
Tom SullivanRepublican:
Mike CrapoConstitution:
Randy BergquistElection Results November 2, 2010 25% 71% 4% Mason-Dixon/Idaho Newspapers October 20–22, 2010 20% 64% 5% Mason-Dixon/Idaho Newspapers September 13–15, 2010 17% 61% Rasmussen Reports August 31, 2010 24% 63% Rasmussen Reports July 15, 2010 27% 64% Rasmussen Reports May 11, 2010 22% 66% 
IllinoisSenate
Incumbent: Roland Burris(D)-Retiring
Winner: Mark KirkSource Date Democrat:
Alexi GiannouliasRepublican:
Mark KirkGreen:
LeAlan JonesElection Results November 2, 2010 46% 48% 3% Public Policy Polling October 30–31, 2010 42% 46% 3% Fox News/Pulse Opinion Research October 30, 2010 42% 46% 6% YouGov October 25–30, 2010 47% 40% — Anzalone Liszt October 27–28, 2010 39% 37% 3% Rasmussen Reports October 26, 2010 42% 46% 5% Anzalone Liszt October 20–24, 2010 38% 36% 7% Fox News/Pulse Opinion Research October 23, 2010 41% 43% 7% WGN/Chicago Tribune October 18–22, 2010 41% 44% 5% Mason Dixon/St Louis Post Dispatch October 18–20, 2010 41% 43% — Rasmussen Reports October 18, 2010 41% 44% 4% Anzalone Liszt October 13–17, 2010 41% 36% 4% Public Policy Polling October 14–16, 2010 40% 42% 4% Greenberg Quinlan Rosner October 11–12, 2010 44% 41% 4% Rasmussen Reports October 11, 2010 44% 43% 4% Southern Illinois University September 30-October 10, 2010 37% 37% 3% Rasmussen Reports October 4, 2010 41% 45% 4% Suffolk University September 30-October 3, 2010 41% 42% 4% Fulcrum Campaign Strategies September 26–29, 2010 33% 42% 2% WGN/Chicago Tribune/Market Shares September 24–28, 2010 38% 36% 5% CNN/Time Magazine September 24–28, 2010 42% 38% 8% Global Strategy Group September 23–26, 2010 40% 37% 3% Public Policy Polling September 23–26, 2010 36% 40% 8% Fox News/Pulse Opinion Research September 25, 2010 40% 42% 7% Rasmussen Reports September 21, 2010 41% 44% 4% We Ask America September 13, 2010 36% 39% 4% Rasmussen Reports September 7, 2010 37% 41% 9% Chicago Tribune/WGN August 28-September 1, 2010 34% 34% — Rasmussen Reports August 23, 2010 42% 40% — Public Policy Polling August 14–15, 2010 37% 35% 9% Rasmussen Reports August 9, 2010 40% 40% — We Ask America August 4, 2010 33% 39% — Rasmussen Reports July 26, 2010 43% 41% — Rasmussen Reports July 7, 2010 40% 39% — Public Policy Polling June 12–13, 2010 31% 30% 14% Rasmussen Reports June 7, 2010 39% 42% — Greenberg Quinlan Rosner May 11–13, 2010 44% 44% — Daily Kos/Research 2K May 3–5, 2010 38% 41% — Rasmussen Reports April 28, 2010 38% 46% — Rasmussen Reports April 5, 2010 37% 41% — Public Policy Polling April 1–5, 2010 33% 37% — Rasmussen Reports March 8, 2010 44% 41% — Daily Kos/Research 2K February 22–24, 2010 43% 36% — Greenberg Quinlan Rosner February 9–14, 2010 49% 45% — Rasmussen Reports February 3, 2010 40% 46% — Public Policy Polling January 22–25, 2010 42% 34% — Rasmussen Reports December 9, 2009 42% 39% — 
IndianaSenate
Incumbent: Evan Bayh-retiring
Winner: Dan CoatsSource Date Democrat:
Brad EllsworthRepublican:
Dan CoatsIndependent:
Rebecca Sink-BurrisElection Results November 2, 2010 40% 55% 5% Survey USA/Mike Downs Center October 21–25, 2010 32% 54% Rasmussen Reports October 20–21, 2010 34% 52% EPIC-MRA October 19–21, 2010 35% 53% EPIC-MRA September 29-October 1, 2010 33% 51% Rasmussen Reports September 14–15, 2010 34% 50% Rasmussen Reports August 4–7, 2010 29% 50% The Polling Company July 31-Aug. 3, 2010 35% 50% Rasmussen Reports July 8, 2010 30% 51% Rasmussen Reports June 2–3, 2010 33% 47% Rasmussen Reports May 5–6, 2010 36% 51% Survey USA/Mike Downs Center April 22–26, 2010 31% 47% Rasmussen Reports April 13–14, 2010 33% 54% Rasmussen Reports March 17–18, 2010 34% 49% Daily Kos/Research 2K February 22–24, 2010 36% 37% Rasmussen Reports February 16–17, 2010 32% 46% 
IowaSenate
Incumbent: Chuck Grassley(R)
Winner: Chuck GrassleySource Date Democrat:
Roxanne ConlinRepublican:
Chuck GrassleyElection Results November 2, 2010 33% 65% Des Moines Register/Selzer & Co. October 26–29, 2010 30% 61% Rasmussen Reports September 22–23, 2010 37% 55% Des Moines Register/Selzer & Co. September 19–22, 2010 33% 61% Rasmussen Reports August 5, 2010 35% 55% Rasmussen Reports June 14, 2010 37% 54% Public Policy Polling May 25–27, 2010 31% 57% Research 2K May 3–5, 2010 40% 49% Rasmussen Reports April 29, 2010 40% 53% Rasmussen Reports March 17, 2010 36% 55% Rasmussen Reports February 18, 2010 36% 53% Research 2K February 15–17, 2010 35% 56% Rasmussen Reports January 26, 2010 31% 59% Daily Kos/Research 2K October 12–14, 2009 39% 51% 
KansasSenate
Incumbent: Sam Brownback(R)-Retiring
Winner: Jerry MoranSource Date Democrat:
Lisa JohnstonRepublican:
Jerry MoranElection Results November 2, 2010 26% 70% Survey USA October 22–26, 2010 26% 66% Survey USA October 10–12, 2010 27% 67% Survey USA September 14–16, 2010 24% 66% Survey USA August 12–15, 2010 23% 69% Rasmussen Reports August 4, 2010 28% 61% Rasmussen Reports June 30, 2010 23% 59% Rasmussen Reports May 11, 2010 25% 61% 
KentuckySenate
Incumbent: Jim Bunning(R)-Retiring
Winner: Rand PaulSource Date Democrat:
Jack ConwayRepublican:
Rand PaulElection Results November 2, 2010 44% 56% Public Policy Polling October 28–30, 2010 40% 55% YouGov October 25–28, 2010 44% 52% Rasmussen Reports October 27, 2010 41% 53% Braun Research/CN2 Politics October 25–27, 2010 39% 47% Survey USA/Louisville Courier-Journal October 24–27, 2010 43% 52% CNN/Time Magazine October 20–26, 2010 44% 46% Public Policy Polling October 21–24, 2010 40% 53% Fox News/Pulse Opinion Research October 23, 2010 43% 50% Mason-Dixon
Lexington Herald-LeaderOctober 18–19, 2010 43% 48% Rasmussen Reports October 18, 2010 42% 47% Bennett, Petts & Normington October 17–18, 2010 49% 47% Braun Research/CN2 Politics October 4–6, 2010 40% 43% Rasmussen Reports September 29, 2010 38% 49% Survey USA/Courier-Journal Bluegrass September 21–23, 2010 47% 49% Benenson Strategy Group September 20–22, 2010 42% 45% Public Policy Polling/Daily Kos September 11–12, 2010 42% 49% Rasmussen Reports September 7, 2010 39% 54% CNN/Time Magazine September 2–7, 2010 46% 46% Braun Research/CN2 Politics August 31-September 1, 2010 37% 42% Survey USA August 30-September 1, 2010 40% 55% Braun Research/CN2 Politics August 16–18, 2010 42% 41% Rasmussen Reports August 17, 2010 40% 49% Ipsos/Reuters August 13–15, 2010 40% 45% Braun Research/CN2 Politics August 2–4, 2010 31% 41% Survey USA July 27–29, 2010 43% 51% Braun Research/CN2 Politics July 19–21, 2010 38% 41% Rasmussen Reports July 20, 2010 41% 49% Public Policy Polling June 28–30, 2010 43% 43% Benenson Strategy Group June 26–29, 2010 48% 46% Rasmussen Reports June 28, 2010 42% 49% Rasmussen Reports June 1, 2010 41% 49% Survey USA May 25–27, 2010 45% 51% Daily Kos/Research 2K May 24–26, 2010 41% 44% Rasmussen Reports May 19, 2010 34% 59% Daily Kos/Research 2K May 10–12, 2010 39% 42% Public Policy Polling May 1–2, 2010 38% 47% Rasmussen Reports April 28, 2010 38% 47% Rasmussen Reports March 31, 2010 36% 50% Daily Kos/Research 2K March 15–17, 2010 39% 45% Rasmussen Reports March 3, 2010 34% 49% Rasmussen Reports February 2, 2010 39% 47% Rasmussen Reports January 6, 2010 38% 46% Public Policy Polling December 18–21, 2009 36% 42% Survey USA October 30-Nov. 2, 2009 44% 39% 
LouisianaSenate
Incumbent: David Vitter(R)
Winner: David VitterSource Date Democrat:
Charlie MelanconRepublican:
David VitterElection Results November 2, 2010 38% 57% Magellan Strategies October 24, 2010 35% 52% Clarus Research Group October 21–24, 2010 38% 50% Anzalone Liszt October 17–19, 2010 45% 48% Anzalone Liszt October 9–12, 2010 42% 49% Magellan Strategies October 10, 2010 35% 51% Magellan Strategies September 19, 2010 34% 52% Bennett, Petts & Normington September 13–16, 2010 38% 48% Rasmussen Reports August 30, 2010 33% 54% Public Policy Polling August 21–22, 2010 41% 51% Clarus Research Group August 15–16, 2010 36% 48% Public Opinion Strategies July 19–20, 2010 31% 48% Anzalone Liszt July 13–18, 2010 43% 44% Rasmussen Reports June 24, 2010 35% 53% Public Policy Polling June 12–13, 2010 37% 46% Southern Media & Opinion Research April 19–23, 2010 31% 49% Rasmussen Reports April 7, 2010 36% 52% Rasmussen Reports March 10, 2010 34% 57% Rasmussen Reports February 10, 2010 33% 57% Rasmussen Reports January 14, 2010 35% 53% Rasmussen Reports October 5, 2009 36% 46% 
MarylandSenate
Incumbent: Barbara Mikulski(D)
Winner: Barbara MikulskiSource Date Democrat:
Barbara MikulskiRepublican:
Eric WargotzElection Results November 2, 2010 62% 36% Washington Post/SRBI October 19–22, 2010 64% 27% OpinionWorks/Baltimore Sun October 15–20, 2010 59% 32% Washington Post/SRBI September 22–26, 2010 61% 29% Rasmussen Reports September 15, 2010 54% 38% Rasmussen Reports August 17, 2010 55% 39% Public Policy Polling July 10–12, 2010 59% 27% Rasmussen Reports July 8, 2010 58% 33% 
MassachusettsSenate
Incumbent: Paul Kirk(D)-Retiring
Winner: Scott BrownSource Date Democrat:
Martha CoakleyRepublican:
Scott BrownElection Results January 19, 2010 47% 52% Politico/Insider Advantage January 17, 2010 43% 52% Public Policy Polling January 16–17, 2010 46% 51% Daily Kos/Research 2K January 15–17, 2010 48% 48% Merriman River Group/InsideMedford.com January 15, 2010 41% 51% Pajamas Media/CrossTarget January 14, 2010 39% 54% American Research Group January 12–14, 2010 45% 48% BMG/Research 2K January 12–13, 2010 49% 41% Suffolk University January 11–13, 2010 46% 50% Rasmussen Reports January 11, 2010 49% 47% Public Policy Polling January 7–9, 2010 47% 48% Boston Globe January 2–6, 2010 53% 36% Rasmussen Reports January 4, 2010 50% 41% 
MissouriSenate
Incumbent: Kit Bond(R)-Retiring
Winner: Roy BluntSource Date Democrat:
Robin CarnahanRepublican:
Roy BluntElection Results November 2, 2010 41% 54% YouGov October 25–28, 2010 43% 52% Missouri State University October 20–27, 2010 41% 54% Mason Dixon/St Louis Post Dispatch October 18–20, 2010 40% 49% Rasmussen Reports October 19, 2010 43% 52% Public Policy Polling October 17–18, 2010 41% 46% Fox News/Pulse Opinion Research October 16, 2010 43% 49% Rasmussen Reports October 5, 2010 43% 51% CNN/Time Magazine October 1–5, 2010 39% 50% Fox News/Pulse Opinion Research October 2, 2010 42% 50% Garin Hart Yang September 20–22, 2010 41% 45% Rasmussen Reports September 21, 2010 44% 52% Global Strategy Group September 14–18, 2010 39% 43% Rasmussen Reports September 7, 2010 43% 53% Rasmussen Reports August 23, 2010 40% 51% Missouri State University August 7–22, 2010 48% 49% Public Policy Polling/Daily Kos August 14–15, 2010 38% 45% Rasmussen Reports August 10, 2010 43% 50% Rasmussen Reports July 27, 2010 43% 49% Mason Dixon July 19–21, 2010 42% 48% Rasmussen Reports July 13, 2010 45% 47% Rasmussen Reports June 28, 2010 43% 48% Rasmussen Reports June 2, 2010 44% 45% Rasmussen Reports May 3, 2010 42% 50% Rasmussen Reports April 6, 2010 42% 48% Public Policy Polling March 27–28, 2010 41% 45% Rasmussen Reports March 9, 2010 41% 47% Rasmussen Reports February 10, 2010 42% 49% Rasmussen Reports January 19, 2010 43% 49% Rasmussen Reports December 15, 2009 46% 44% Public Policy Polling November 13–15, 2009 43% 42% 
NevadaSenate
Incumbent: Senate Majority Leader Harry Reid(D)
Winner: Harry ReidSource Date Democrat:
Harry ReidRepublican:
Sharron AngleTea Party:
Scott AshjianElection Results November 2, 2010 50% 45% Public Policy Polling October 30–31, 2010 46% 47% 3% Fox News/Pulse Opinion Research October 30, 2010 45% 48% — YouGov October 25–30, 2010 48% 45% — LVRJ/Mason Dixon October 25–27, 2010 45% 49% — CNN/Time Magazine October 20–26, 2010 43% 39% 5% Rasmussen Reports October 25, 2010 45% 49% — Rasmussen Reports October 17, 2010 47% 50% — LVRJ/Mason Dixon October 11–12, 2010 45% 47% — Rasmussen Reports October 11, 2010 48% 49% — Fox News/Pulse Opinion Research October 9, 2010 47% 49% — Public Policy Polling October 7–9, 2010 47% 45% 2% Rasmussen Reports October 5, 2010 46% 50% — CNN/Time Magazine October 1–5, 2010 43% 32% 9% CNN/Time Magazine October 1–5, 2010 50% 40% — Fox News/Pulse Opinion Research October 2, 2010 46% 49% — Rasmussen Reports September 28, 2010 48% 47% — Public Opinion Strategies September 21–23, 2010 45% 40% 1% LVRJ/Mason-Dixon September 20–22, 2010 43% 43% 1% Fox News/Pulse Opinion Research September 18, 2010 45% 46% — CNN/Time Magazine September 10–14, 2010 41% 42% 5% Rasmussen Reports September 13, 2010 48% 48% — Ipsos/Reuters September 10–12, 2010 46% 44% — Fox News/Pulse Opinion Research September 11, 2010 44% 45% — LVRJ/Mason-Dixon September 7–9, 2010 46% 44% — Rasmussen Reports September 1, 2010 45% 45% — LVRJ/Mason-Dixon August 23–25, 2010 45% 44% — Rasmussen Reports August 16, 2010 47% 47% — LVRJ/Mason-Dixon August 9–11, 2010 46% 44% — Ipsos/Reuters July 30-August 1, 2010 48% 44% — LVRJ/Mason-Dixon July 26–28, 2010 43% 42% — Rasmussen Reports July 27, 2010 45% 43% — Public Policy Polling July 16–18, 2010 48% 46% — Mason-Dixon July 12–14, 2010 44% 37% — Rasmussen Reports June 22, 2010 41% 48% — Rasmussen Reports June 9, 2010 39% 50% — Mason Dixon/LVRJ June 1–3, 2010 41% 44% — Daily Kos/Research 2K May 31-June 2, 2010 43% 37% 2% Mason Dixon/LVRJ May 24–26, 2010 42% 39% — Daily Kos/Research 2K April 26–28, 2010 41% 44% 5% Rasmussen Reports April 27, 2010 40% 48% — Rasmussen Reports March 31, 2010 40% 51% — Rasmussen Reports March 3, 2010 38% 46% — Mason Dixon/LVRJ February 22–24, 2010 42% 44% — Public Opinion Strategies February 15–16, 2010 37% 32% 16% Rasmussen Reports February 3, 2010 40% 44% — Rasmussen Reports January 11, 2010 40% 44% — Rasmussen Reports December 9, 2009 43% 47% — 
New HampshireSenate
Incumbent: Judd Gregg(R)-Retiring
Winner: Kelly AyotteSource Date Democrat:
Paul HodesRepublican:
Kelly AyotteElection Results November 2, 2010 37% 60% University of New Hampshire October 27–31, 2010 36% 54% Public Policy Polling October 27–29, 2010 41% 56% Rasmussen Reports October 27, 2010 41% 56% University of New Hampshire October 7–12, 2010 35% 50% Rasmussen Reports October 10, 2010 44% 51% American Research Group October 3–5, 2010 42% 47% University of New Hampshire September 23–29, 2010 35% 50% American Research Group September 22–26, 2010 32% 46% Rasmussen Reports September 15, 2010 44% 51% Public Policy Polling September 11–12, 2010 43% 47% Rasmussen Reports August 5, 2010 38% 51% University of New Hampshire July 19–27, 2010 37% 45% Public Policy Polling July 23–25, 2010 42% 45% Rasmussen Reports July 12, 2010 37% 49% Rasmussen Reports May 11, 2010 38% 50% University of New Hampshire April 12–21, 2010 32% 47% Public Policy Polling April 17–18, 2010 40% 47% Rasmussen Reports April 7, 2010 35% 50% Rasmussen Reports March 8, 2010 37% 47% Rasmussen Reports February 10, 2010 39% 46% Daily Kos/Research 2K February 1–3, 2010 39% 46% University of New Hampshire January 27-Feb. 3, 2010 33% 41% Rasmussen Reports January 12, 2010 40% 49% American Research Group December 26–29, 2009 36% 43% University of New Hampshire September 25-Oct. 2, 2009 33% 40% 
New YorkSenate Class III
Incumbent: Chuck Schumer(D)
Winner: Chuck SchumerSource Date Democrat:
Chuck SchumerRepublican:
Jay TownsendElection Results November 2, 2010 65% 33% YouGov October 28–31, 2010 59% 31% Siena College October 27–30, 2010 64% 32% Marist College/McClatchy October 26–28, 2010 66% 28% Survey USA October 25–28, 2010 62% 32% YouGov October 25–28, 2010 56% 31% Quinnipiac University October 18–24, 2010 64% 32% Marist College October 18–20, 2010 68% 27% Rasmussen Reports October 19, 2010 59% 31% Siena College October 14–18, 2010 67% 28% New York Times October 10–15, 2010 61% 19% Survey USA October 11–13, 2010 63% 30% Angus Reid October 5–7, 2010 67% 27% Survey USA October 5–7, 2010 60% 30% Quinnipiac University October 1–5, 2010 63% 32% CNN/Time Magazine October 1–5, 2010 67% 29% Public Policy Polling October 1–3, 2010 59% 37% Marist College September 19–22, 2010 59% 38% Survey USA September 20–21, 2010 54% 33% Quinnipiac University September 16–20, 2010 54% 38% Siena College September 16–17, 2010 63% 30% Rasmussen Reports September 16, 2010 58% 35% Siena College July 6–8, 2010 63% 26% Rasmussen Reports June 16, 2010 54% 33% Siena College June 7–9, 2010 60% 26% Siena College May 17–20, 2010 63% 24% Marist College May 3–5, 2010 63% 24% Senate Class I
Incumbent: Kirsten Gillibrand(D)
Winner: Kirsten GillibrandSource Date Democrat:
Kirsten GillibrandRepublican:
Joseph DioGuardiElection Results November 2, 2010 61% 37% YouGov October 28–31, 2010 57% 31% Siena College October 27–30, 2010 57% 37% Marist College/McClatchy October 26–28, 2010 55% 32% Survey USA October 25–28, 2010 56% 36% YouGov October 25–28, 2010 55% 30% Quinnipiac University October 18–24, 2010 57% 34% Marist College October 18–20, 2010 56% 31% Rasmussen Reports October 19, 2010 54% 33% Siena College October 14–18, 2010 60% 31% New York Times October 10–15, 2010 50% 22% Survey USA October 11–13, 2010 54% 36% Survey USA October 5–7, 2010 54% 35% Quinnipiac University October 1–5, 2010 55% 34% CNN/Time Magazine October 1–5, 2010 60% 33% Public Policy Polling October 1–3, 2010 50% 40% Marist College September 19–22, 2010 54% 42% Survey USA September 20–21, 2010 45% 44% Quinnipiac University September 16–20, 2010 48% 42% Siena College September 16–17, 2010 57% 31% Rasmussen Reports September 16, 2010 49% 39% Rasmussen Reports September 1, 2010 51% 31% Quinnipiac University August 23–29, 2010 43% 28% Siena College August 9–12, 2010 54% 29% Rasmussen Reports July 29, 2010 50% 33% Quinnipiac University July 20–26, 2010 48% 27% Siena College July 6–8, 2010 51% 29% Quinnipiac University June 15–20, 2010 46% 26% Rasmussen Reports June 16, 2010 49% 38% Siena College June 7–9, 2010 47% 29% Siena College May 17–20, 2010 51% 25% Rasmussen Reports May 12, 2010 51% 28% Marist College May 3–5, 2010 50% 30% Siena College April 12–15, 2010 46% 27% Marist College March 23–24, 2010 54% 27% Siena College March 15–18, 2010 48% 24% Marist College February 22–24, 2010 58% 28% Siena College February 14–19, 2010 51% 24% Quinnipiac University January 27-Feb. 1, 2010 44% 27% Marist College January 25–27, 2010 52% 30% 
North CarolinaSenate
Incumbent: Richard Burr(R)
Winner: Richard BurrSource Date Democrat:
Elaine MarshallRepublican:
Richard BurrLibertarian:
Michael BeitlerElection Results November 2, 2010 43% 55% 2% Public Policy Polling October 29–31, 2010 40% 52% 2% Survey USA October 22–25, 2010 38% 53% 5% Civitas Institute/Tel Opinion Research October 18–20, 2010 34% 44% 4% Public Policy Polling October 15–17, 2010 40% 48% 3% Rasmussen Reports October 12, 2010 38% 52% — High Point University September 25–30, 2010 31% 45% 4% Public Policy Polling September 23–26, 2010 36% 49% 4% Civitas Institute/National Research September 15–17, 2010 29% 49% 3% Survey USA September 10–13, 2010 34% 58% 6% Rasmussen Reports September 8, 2010 38% 54% — Public Policy Polling August 27–29, 2010 38% 43% 6% Rasmussen Reports August 3, 2010 40% 49% — Public Policy Polling July 27–31, 2010 37% 39% 7% Civitas Institute July 19–21, 2010 37% 44% 1% Lake Research July 15–19, 2010 37% 35% 5% Survey USA July 8–11, 2010 36% 46% 6% Rasmussen Reports July 6, 2010 37% 52% — Public Policy Polling June 28–30, 2010 33% 38% 10% Survey USA June 23–24, 2010 40% 50% — Rasmussen Reports June 23, 2010 43% 44% — Public Policy Polling June 4–6, 2010 39% 46% — Rasmussen Reports June 3, 2010 36% 50% — Public Policy Polling May 8–10, 2010 42% 43% — Rasmussen Reports May 5, 2010 40% 48% — Rasmussen Reports April 19, 2010 32% 50% — Public Policy Polling April 8–11, 2010 37% 43% — Rasmussen Reports March 22, 2010 35% 51% — Public Policy Polling March 12–15, 2010 36% 41% — Rasmussen Reports February 23, 2010 34% 50% — Public Policy Polling February 12–15, 2010 33% 43% — Rasmussen Reports January 27, 2010 37% 47% — Public Policy Polling December 11–13, 2009 37% 42% — Civitas Institute December 1–3, 2009 32% 40% — Change Congress October 31-Nov. 1, 2009 35% 42% — 
North DakotaSenate
Incumbent: Byron Dorgan(D)-retiring
Winner: John HoevenSource Date Democrat:
Tracy PotterRepublican:
John HoevenElection Results November 2, 2010 22% 76% Rasmussen Reports October 20, 2010 25% 72% Rasmussen Reports September 20–21, 2010 25% 68% Rasmussen Reports August 10–11, 2010 25% 69% Rasmussen Reports July 21, 2010 22% 69% Rasmussen Reports June 15–16, 2010 19% 73% Rasmussen Reports May 18–19, 2010 23% 72% Rasmussen Reports April 20, 2010 24% 69% Rasmussen Reports March 23, 2010 25% 68% 
OhioSenate
Incumbent: George Voinovich(R)-Retiring
Winner: Rob PortmanSource Date Democrat:
Lee FisherRepublican:
Rob PortmanElection Results November 2, 2010 39% 57% YouGov October 28–31, 2010 35% 49% University of Cincinnati October 27–31, 2010 39% 60% Public Policy Polling October 28–30, 2010 39% 57% Quinnipiac University October 25–30, 2010 37% 56% Columbus Dispatch October 20–29, 2010 40% 56% YouGov October 25–28, 2010 39% 47% Rasmussen Reports October 26, 2010 33% 57% Survey USA October 22–26, 2010 37% 52% Quinnipiac University October 18–24, 2010 36% 53% Wilson Research Strategies October 20–21, 2010 38% 49% CNN/Time/Opinion Research October 15–19, 2010 43% 49% University of Cincinnati October 14–18, 2010 39% 58% Quinnipiac University October 12–17, 2010 34% 55% University of Cincinnati October 8–13, 2010 36% 58% Rasmussen Reports October 11, 2010 34% 57% Fox News/Pulse Opinion Research October 9, 2010 35% 52% Angus Reid Public Opinion October 5–8, 2010 43% 52% Suffolk University October 4–6, 2010 37% 47% Quinnipiac University September 29-October 3, 2010 36% 55% Fox News/Pulse Opinion Research October 2, 2010 37% 53% Rasmussen Reports September 27, 2010 42% 51% CBS News/NY Times September 23–27, 2010 34% 45% Fox News/Pulse Opinion Research September 25, 2010 37% 50% Ipsos/Reuters September 23–25, 2010 37% 50% Ohio Newspapers/University of Cincinnati September 16–20, 2010 40% 55% Fox News/Pulse Opinion Research September 18, 2010 36% 49% CNN/Time Magazine September 10–14, 2010 41% 52% Quinnipiac University September 9–14, 2010 35% 55% Rasmussen Reports September 13, 2010 41% 49% Survey USA September 10–13, 2010 40% 49% Fox News/Pulse Opinion Research September 11, 2010 41% 48% The Columbus Dispatch August 25-September 3, 2010 37% 50% Rasmussen Reports August 30, 2010 39% 44% Public Policy Polling August 27–29, 2010 38% 45% Rasmussen Reports August 16, 2010 37% 45% Reuters/Ipsos August 6–8, 2010 36% 43% Rasmussen Reports August 2, 2010 40% 44% Rasmussen Reports July 19, 2010 39% 45% Rasmussen Reports June 29, 2010 39% 43% Public Policy Polling June 26–27, 2010 40% 38% Quinnipiac University June 22–27, 2010 42% 40% Rasmussen Reports June 3, 2010 43% 43% University of Cincinnati May 11–20, 2010 47% 46% Rasmussen Reports May 5, 2010 43% 42% Quinnipiac University April 21–26, 2010 40% 37% Daily Kos/Research 2K April 5–7, 2010 43% 39% Rasmussen Reports March 30, 2010 38% 43% Quinnipiac University March 23–29, 2010 41% 37% Public Policy Polling March 20–21, 2010 36% 41% Rasmussen Reports March 4, 2010 39% 44% Quinnipiac University February 16–21, 2010 37% 40% Rasmussen Reports February 5–6, 2010 39% 43% Rasmussen Reports January 12, 2010 37% 44% Ohio Right to Life/Wenzel Strategies January 8–12, 2010 31% 37% Rasmussen Reports December 7, 2009 36% 38% Quinnipiac University November 5–9, 2009 36% 39% 
OklahomaSenate
Incumbent: Tom Coburn(R)
Winner: Tom CoburnSource Date Democrat:
Jim RogersRepublican:
Tom CoburnElection Results November 2, 2010 26% 71% Rasmussen Reports September 23, 2010 26% 68% Rasmussen Reports August 26, 2010 24% 67% Rasmussen Reports July 28, 2010 31% 65% Rasmussen Reports June 30, 2010 26% 65% 
OregonSenate
Incumbent: Ron Wyden(D)
Winner: Ron WydenSource Date Democrat:
Ron WydenRepublican:
Jim HuffmanSurvey USA October 23–28, 2010 57% 32% Rasmussen Reports October 25, 2010 53% 42% Public Policy Polling/Daily Kos October 16–17, 2010 56% 40% Survey USA October 12–14, 2010 56% 34% Rasmussen Reports October 10, 2010 52% 36% Survey USA September 12–14, 2010 54% 38% Rasmussen Reports September 8, 2010 53% 35% Rasmussen Reports August 22, 2010 56% 36% Survey USA July 25–27, 2010 53% 35% Rasmussen Reports June 26, 2010 51% 35% Rasmussen Reports June 17, 2010 47% 37% Survey USA June 7–9, 2010 51% 38% Reports May 24, 2010 51% 38% Grove Insight March 5–8, 2010 53% 23% Reports February 16, 2010 49% 35% 
PennsylvaniaSenate
Incumbent: Arlen Specter(D)-defeated
Winner: Pat ToomeySource Date Democrat:
Joe SestakRepublican:
Pat ToomeyElection Results November 2, 2010 49% 51% Public Policy Polling October 30–31, 2010 46% 51% YouGov October 28–31, 2010 41% 46% Muhlenberg College/Morning Call October 28–31, 2010 44% 48% Muhlenberg College/Morning Call October 27–30, 2010 43% 45% Quinnipiac University October 25–30, 2010 45% 50% Muhlenberg College/Morning Call October 26–29, 2010 43% 45% Rasmussen Reports October 28, 2010 46% 50% Marist College/McClatchy October 26–28, 2010 43% 39% YouGov October 25–28, 2010 40% 46% Muhlenberg College/Morning Call October 25–28, 2010 42% 47% Susquehanna Polling & Research
Pittsburgh Tribune ReviewOctober 24–27, 2010 44% 46% Muhlenberg College/Morning Call October 24–27, 2010 40% 48% Muhlenberg College/Morning Call October 23–26, 2010 41% 46% CNN/Time Magazine October 20–26, 2010 47% 43% Muhlenberg College/Morning Call October 22–25, 2010 40% 48% Ipsos/Reuters October 22–24, 2010 46% 42% Muhlenberg College/Morning Call October 21–24, 2010 42% 47% Franklin & Marshall College October 18–24, 2010 40% 48% Muhlenberg College/Morning Call October 20–23, 2010 43% 46% Muhlenberg College/Morning Call October 19–22, 2010 42% 45% Rasmussen Reports October 21, 2010 44% 48% Muhlenberg College/Morning Call October 18–21, 2010 43% 43% Muhlenberg College/Morning Call October 17–20, 2010 43% 43% Muhlenberg College/Morning Call October 16–19, 2010 44% 41% Public Policy Polling October 17–18, 2010 46% 45% Quinnipiac University October 13–17, 2010 46% 48% Rasmussen Reports October 12, 2010 39% 49% Garin Hart Yang October 8–10, 2010 47% 44% Bennett, Petts & Normington October 4–6, 2010 45% 46% Muhlenberg College/Morning Call September 28-October 4, 2010 38% 45% Rasmussen Reports September 29, 2010 40% 49% McClatchy/Marist College September 26–28, 2010 42% 51% Suffolk University September 24–27, 2010 40% 45% Susquehanna Polling & Research September 23–26, 2010 42% 45% Franklin & Marshall College/Philadelphia Daily News September 20–26, 2010 29% 32% Muhlenberg College/Morning Call September 18–23, 2010 39% 46% Magellan Strategies September 21, 2010 41% 49% CNN/Time Magazine September 17–20, 2010 44% 49% Quinnipiac University September 15–19, 2010 43% 50% Fox News/Pulse Opinion Research September 18, 2010 40% 48% Politics PA/Municipoll September 15–16, 2010 36% 45% Times Leader/Critical Insights September 14–16, 2010 36% 40% Rasmussen Reports September 13, 2010 41% 49% Fox News/Pulse Opinion Research September 11, 2010 41% 47% Rasmussen Reports August 30, 2010 39% 45% Ipsos/Reuters August 27–29, 2010 37% 47% Franklin & Marshall August 16–23, 2010 28% 31% Rasmussen Reports August 16, 2010 36% 46% Public Policy Polling August 14–16, 2010 36% 45% Garin Hart Yang August 12–15, 2010 44% 46% Rasmussen Reports July 28, 2010 39% 45% Rasmussen Reports July 14, 2010 38% 45% Quinnipiac University July 6–11, 2010 43% 43% Rasmussen Reports June 29, 2010 39% 45% Public Policy Polling June 19–21, 2010 41% 41% Rasmussen Reports June 2, 2010 38% 45% Daily Kos/Research 2K May 24–26, 2010 43% 40% Rasmussen Reports May 19, 2010 46% 42% Daily Kos/Research 2K May 10–12, 2010 40% 45% Quinnipiac University May 4–10, 2010 40% 42% Franklin & Marshall College May 3–9, 2010 28% 29% Rasmussen Reports May 6, 2010 40% 42% Rasmussen Reports April 12, 2010 36% 47% Muhlenberg College/Morning Call March 29-April 7, 2010 22% 33% Quinnipiac University March 30-April 5, 2010 34% 42% Public Policy Polling March 29-April 1, 2010 36% 42% Franklin & Marshall College March 15–21, 2010 19% 27% Rasmussen Reports March 15, 2010 37% 42% Daily Kos/Research 2K March 8–10, 2010 39% 42% Quinnipiac University February 22–28, 2010 36% 39% Franklin & Marshall College February 15–21, 2010 20% 38% Rasmussen Reports February 8, 2010 35% 43% Franklin & Marshall College January 18–24, 2010 19% 41% Rasmussen Reports January 18, 2010 35% 43% Quinnipiac University December 8–14, 2009 35% 40% Rasmussen Reports December 8, 2009 38% 44% Franklin & Marshall College October 20–25, 2009 20% 28% 
South CarolinaSenate
Incumbent: Jim DeMint(R)
Winner: Jim DeMintSource Date Democrat:
Alvin GreeneRepublican:
Jim DeMintGreen:
Tom ClementsElection Results November 2, 2010 28% 62% 9% Rasmussen Reports October 19, 2010 21% 58% Crantford & Associates September 30, 2010 23% 56% Rasmussen Reports September 22, 2010 21% 64% Rasmussen Reports August 25, 2010 19% 63% Rasmussen Reports July 29, 2010 20% 62% Rasmussen Reports June 10, 2010 21% 58% 
UtahSenate
Incumbent: Bob Bennett (R)-not renominated at state party convention
Winner: Mike LeeSource Date Democrat:
Sam GranatoRepublican:
Mike LeeIndependent:
Bob Bennett*Constitution:
Scott BradleyElection Results November 2, 2010 33% 62% -- 6% Deseret News/Dan Jones & Associates October 25–28, 2010 30% 57% — 5% Mason Dixon/Salt Lake Tribune October 25–27, 2010 32% 48% — 5% Deseret News/Dan Jones & Associates October 11–14, 2010 31% 53% — Rasmussen Reports October 13, 2010 28% 61% — Deseret News/Dan Jones & Associates September 7–13, 2010 17% 37% 32% Rasmussen Reports August 23, 2010 29% 54% — Rasmussen Reports June 23, 2010 28% 58% — - Is not running
VermontSenate
Incumbent: Patrick Leahy(D)
Winner: Patrick LeahySource Date Democrat:
Patrick LeahyRepublican:
Len BrittonVermont Public Radio/Mason Dixon October 11–13, 2010 62% 27% Rasmussen Reports September 13, 2010 63% 32% Rasmussen Reports June 17, 2010 64% 29% 
WashingtonSenate
Incumbent: Patty Murray(D)
Winner: Patty MurraySource Date Democrat:
Patty MurrayRepublican:
Dino RossiPublic Policy Polling October 29–31, 2010 48% 50% Fox News/Pulse Opinion Research October 30, 2010 49% 47% YouGov October 25–30, 2010 50% 45% Marist College/McClatchy October 26–28, 2010 47% 44% University of Washington October 18–28, 2010 49% 45% Survey USA October 24–27, 2010 47% 47% Rasmussen Reports October 26, 2010 47% 48% Rasmussen Reports October 17, 2010 49% 46% McClatchy/Marist College October 14–17, 2010 48% 47% Public Policy Polling October 14–16, 2010 49% 47% Survey USA October 11–14, 2010 50% 47% Moore Information October 11–13, 2010 47% 46% University of Washington October 5–14, 2010 50% 42% CNN/Time Magazine October 8–12, 2010 51% 43% Elway Research October 7–11, 2010 55% 40% Fox News/Pulse Opinion Research October 9, 2010 46% 47% Rasmussen Reports October 6, 2010 46% 49% Rasmussen Reports September 28, 2010 47% 48% Fabrizio, McLaughlin & Associates
American Action ForumSeptember 26–27, 2010 42% 48% Fox News/Pulse Opinion Research September 25, 2010 48% 47% Survey USA September 19–21, 2010 50% 48% Rasmussen Reports September 14, 2010 51% 46% CNN/Time Magazine September 10–14, 2010 53% 44% Elway Research September 9–12, 2010 50% 41% Rasmussen Reports August 31, 2010 46% 48% Fairbank, Maslin, Maullin, Metz and Associates August 25–31, 2010 50% 45% Survey USA August 18–19, 2010 45% 52% Rasmussen Reports August 18, 2010 48% 44% Public Policy Polling July 27-Aug. 1, 2010 49% 46% Rasmussen Reports July 28, 2010 49% 47% Rasmussen Reports July 14, 2010 45% 48% Rasmussen Reports June 22, 2010 47% 47% Elway Poll June 9–13, 2010 47% 40% University of Washington May 24–28, 2010 39% 42% Rasmussen Reports May 25, 2010 48% 47% University of Washington May 3–23, 2010 44% 40% Rasmussen Reports May 4, 2010 48% 46% Elway Poll April 29-May 2, 2010 51% 34% Survey USA April 19–22, 2010 42% 52% Rasmussen Reports April 6, 2010 48% 46% Daily Kos/Research 2K March 22–24, 2010 52% 41% Rasmussen Reports March 9, 2010 46% 49% Rasmussen Reports February 11, 2010 46% 48% Moore Information January 24–25, 2010 43% 45% 
West VirginiaSpecial Election
Incumbent: Carte Goodwin(D)-Retiring
Winner: Joe ManchinSource Date Democrat:
Joe ManchinRepublican:
John RaeseElection Results November 2, 2010 53% 43% Rasmussen Reports October 31, 2010 50% 46% Public Policy Polling October 30–31, 2010 51% 46% Rasmussen Reports October 26, 2010 49% 46% Public Policy Polling October 23–24, 2010 50% 44% Fox News/Pulse Opinion Research October 23, 2010 46% 48% Global Strategy Group October 17–20, 2010 48% 43% Rasmussen Reports October 19, 2010 43% 50% Fox News/Pulse Opinion Research October 16, 2010 45% 48% Rasmussen Reports October 12, 2010 46% 49% Marshall University/Orion Strategies October 11–12, 2010 48% 38% CNN/Time Magazine October 8–12, 2010 45% 38% Greenberg Quinlan Rosner October 7–11, 2010 49% 44% Public Policy Polling October 9–10, 2010 48% 45% Rasmussen Reports October 5, 2010 44% 50% Fox News/Pulse Opinion Research October 2, 2010 43% 48% Rasmussen Reports September 27, 2010 46% 48% Rasmussen Reports September 19, 2010 50% 43% Public Policy Polling September 18–19, 2010 43% 46% Rasmussen Reports September 8, 2010 50% 45% Rasmussen Reports August 29, 2010 48% 42% MindField/Repass & Partners July 26-August 2, 2010 54% 32% Rasmussen Reports July 22, 2010 51% 35% 
WisconsinSenate
Incumbent: Russ Feingold(D)
Winner: Ron JohnsonSource Date Democrat:
Russ FeingoldRepublican:
Ron JohnsonElection Results November 2, 2010 47% 52% YouGov October 25–30, 2010 47% 49% Marist College/McClatchy October 26–28, 2010 42% 44% Public Policy Polling October 26–28, 2010 44% 53% Voter Consumer Research/We the People October 24–27, 2010 44% 48% Rasmussen Reports October 25, 2010 46% 53% St. Norbert College/WPR October 12–15, 2010 47% 49% CNN/Time Magazine October 8–12, 2010 45% 48% Rasmussen Reports October 11, 2010 45% 52% Ipsos/Reuters October 8–11, 2010 44% 51% Voter Consumer Research/We the People September 29-October 4, 2010 41% 49% Rasmussen Reports September 29, 2010 42% 54% McClatchy/Marist College September 26–28, 2010 45% 52% Fox News/Pulse Opinion Research September 25, 2010 44% 52% CNN/Time Magazine September 17–20, 2010 45% 51% Public Policy Polling/Daily Kos September 18–19, 2010 41% 52% Rasmussen Reports September 15, 2010 44% 51% Rasmussen Reports August 24, 2010 46% 47% Rasmussen Reports August 10, 2010 46% 47% Rasmussen Reports July 27, 2010 46% 48% Rasmussen Reports July 13, 2010 46% 47% Magellan Strategies July 12, 2010 45% 43% Public Policy Polling June 26–27, 2010 45% 43% Rasmussen Reports June 21, 2010 46% 45% Rasmussen Reports May 25, 2010 46% 44% Other races
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