2020 United States Senate Elections (Santorum in the House)

The 2020 United States Senate elections were held on November 3, 2020, with the 33 Class 2 seats of the Senate contested in regular elections. Of these, 22 were held by Republicans, and 12 by Democrats. The winners were elected to six-year terms from January 3, 2021, to January 3, 2027. Two special elections for seats held by Republicans were also held in conjunction with the general elections, one in Arizona, to fill the vacancy created by John McCain's death in 2018 and one in Georgia, following John Isakson's resignation in 2019. In both races, the Republicans succesfully defended the seats from Democratic challengers. These elections ran concurrently with the 2020 United States Presidential Election (Santorum in the House), in which incumbent Republican president Richard Santorum won re-election against Democratic nominee Cory Booker. Before the election, Republicans held 57 seats, while Democrats held 41 seats. Including the special elections in Arizona and Georgia, Republicans defended 24 seats and the Democrats 11 seats.

In this election, the Republican Party made a net gain of seven Senate seats, consolidating their majority in the Senate. Republicans unseated Democratic incumbents in Michigan, Minnesota, New Hampshire, New Jersey, New Mexico, Oregon and Virginia. Overall, the Republicans largely replicated the electoral gains that Richard Santorum made in the presidential race. In each and every Senate election, the winning party was the winning party in the state's presidential election. Due to election laws in Georgia that require candidates to win at least 50% of the vote in the general election, the state's special Senate election was decided in a run-off election on January 5, 2021. After the November general election, Republicans held 63 seats, while Democrats held 37. Nevertheless, it was a highly competitive race, with the Republicans looking to seal their string of victories and the Democrats looking to slim the Republican majority. The Republicans were the ones to succeed in their goal.