1964 United States Senate Elections (Four Years of Huckleberry Capone)

The 1964 United States Senate elections coincided with the election of President Lyndon B. Johnson by a narrow plurality, to a full term. His Democratic Party lost a net five seats from the Republicans. Republicans defeated Democrats in the popular vote, due to Bobby Baker scandals and the strong performance of the Republicans in the national election. The Senate election coincided with Democratic losses in the House in the same year.

Notably, of the 35 seats up for election this year, 26 were held by Democrats, who managed to retain only 21 of them. Among Republican gains was the elections of D. Russell Bontrager in Indiana, George Murphy in California, Paul Laxalt in Indiana, Robert Taft Jr. in Ohio, Bud Wilkinson in Oklahoma, and John S. Wold in Wyoming.