Political party strength in U.S. states

The following table shows all the U.S. states and to what party (Democratic or Republican) their state governors belong. Also indicated is the majority party of the state legislatures' upper and lower houses as well as U.S. Senate representation. (Nebraska's legislature is unicameral, i.e., it has only one legislative house and is officially non-partisan, though party affiliation still has an unofficial influence on the legislative process.)

Throughout most of the 20th century, although the Republican party often held power at a national level, the Democratic party held almost uncontested power at the state level, especially in the solid South, where the Republican Party was virtually nonexistent. (For much of the 20th century, North Dakota was a one-party Republican state, the only one in the country.)

However, in the 1970s and 1980s, the Republicans slowly increased their strength in the state legislatures, especially in the South, where the increasingly conservative Republican party took the place of the Democrats, who had been weakened by their party's support for the Civil Rights Movement starting in the 1940s. In the 1990s, the Republicans finally overtook the Democrats in holding majorities in statehouses and governorships.

Currently, majority control of overall seats in the state legislature has been changing every few years. As of the U.S. gubernatorial elections of 2006, the Democratic party holds an outright majority of 669 with 3,989 seats over the Republican party's 3,320 in number of seats elected on a partisan ballot. Of the 7,382 seats in all of the state legislatures combined, independents and third parties account for only 17 members, not counting the 49 members of the Nebraska Legislature, which is the only legislature in the nation to hold nonpartisan elections to determine its members.

Current party strength

Historical party strength

The following table shows how many legislatures were controlled outright by each party.

References