1920 United States Senate elections
The 1920 United States Senate elections were elections for the United States Senate that coincided with the presidential election of Warren G. Harding. Democrat Woodrow Wilson's unpopularity allowed Republicans to win races across the country, winning ten seats from the Democrats and providing them with an overwhelming 59-to-37 majority. The Republican landslide was so vast that Democrats lost over half of the seats that were contested this year and failed to win a single race outside the South. Since the passage of the seventeenth amendment, these elections were the closest when the winning  party in almost every Senate election mirrored the winning party for their state in the presidential election, with Kentucky being the only Senate race to not mirror their presidential result. No other Senate election cycle in a presidential year would come close to repeating this feat until 2016, in which the result of every Senate race mirrored the corresponding state's result in the presidential election. Coincidentally, that election cycle involved the same class of Senate seats, Class 3. This is one of only five occasions where 10 or more Senate seats changed hands in an election, with the other  occasions being in 1932, 1946, 1958, and 1980. Seat changes. Republicans won two seats that were open from retiring Democrats, one seat from a Democrat who had lost renomination, and they defeated seven Democratic incumbents. Race summary. Special elections during the 66th Congress. In these special elections, the winner was seated during 1920 or before March 4, 1921; ordered by election date. Elections leading to the 67th Congress. In these general elections, the winners were elected for the term beginning March 4, 1921; ordered by state. All of the elections involved the Class 3 seats. 1920 United States Senate elections