The 1932 election brought about a major realignment in political party affiliation. Franklin Delano Roosevelt was able to forge a coalition of labor unions, liberals, African Americans, and southern whites. These disparate voting blocs together formed a majority of voters and handed the Democratic Party seven victories out of nine presidential elections, as well as control of both houses of Congress during much of this time.
In many ways, it was the civil rights movement that ultimately heralded the demise of the coalition. Democrats had traditionally solid support in southern states, but this electoral dominance ended in 1964. In the 1964 election, many southern voters threw their support to Republican candidate Barry Goldwater, who had opposed civil rights legislation, and Goldwater won most of the southern states that year. In the 1968 election, the south once again abandoned its traditional support for the Democrats by supporting segregationist third party candidate George C. Wallace. These events, coupled with President Richard Nixon's southern strategy aimed at attracting these voters, ultimately led to increased support for Republicans by southern whites. Since this time, with the exception of the 1976 election, when southern states voted for native southerner Jimmy Carter, the south has generally voted for Republicans in presidential elections.
In more recent years, support for the Democrats has become the strongest in the northeast and on the west coast, with Republicans showing more strength in the rest of the country. The division between the two parties is virtually even in both houses of Congress, as of 2002, and no party has established the kind of dominance that the Democrats were able to exert during the period of the New Deal coalition.