United States Senate election in Illinois, 2020

United States Senate elections, 2020

2018 ← November 3, 2020 → 2022

Class 2 (33 of the 100) seats in the United States Senate 51 seats needed for a majority

Senate seats up for election:   Democratic incumbent   Retiring Democrat   Republican incumbent   Retiring Republican   Undetermined incumbent   No election

Elections to the United States Senate will be held on November 3, 2020 with the 33 Class 2 seats of the Senate being contested in regular elections. The winners will serve six-year terms from January 3, 2021, until January 3, 2027. Additionally, special elections may be held to fill vacancies.

The presidential election, elections to the House of Representatives, elections for governors in states and territories, and many state and local elections will also be held on this date.

In 2014, the last regular election of the Class 2 Senate seats, Republicans won a net gain of nine seats, which will be targeted by the Democrats in 2020 to try to win back.

The composition of the Senate going into the 2020 election will depend on the results of the 2018 elections. In the 2020 election, all 33 Class II Senate seats are up for election; there are currently 22 Republicans and 11 Democrats expected to be up for election, although the exact numbers could change if vacancies or party switches occur. Special elections may also be held in 2020 if vacancies arise in Class I or Class III Senate seats.

The following is the list of state-by-state summaries:

The incumbent for this election will be determined in the 2018 special election.

One-term incumbent Republican Dan Sullivan was elected to a first term in 2014, defeating one-term incumbent Mark Begich. Sullivan will be 55 years old in 2020.