As the election approaches, here is a quick overview of the states with Senate races this election year. Each state has two senators, elected for six-year terms. Those terms are staggered so that around one-third of all senators are up for reelection every two years, and normally no more than one Senate seat is on the ballot per state. This year, because of a special election in Georgia — where there is also a regular Senate race scheduled — there will be 35 races in 34 states on election day.
Martha McSally was appointed to the post in January 2019 by Arizona Governor Doug Ducey, following the death of Republican Senator John McCain and the resignation of his initial replacement, then-retired Senator John Kyl.
Kelly Loeffler was appointed to the post in January 2020 by Georgia Governor Mike Kemp, following the resignation of Republican Senator Johnny Isakson. There are no primaries in Georgia special elections. If no candidate receives more than 50% of the vote, the top two finishers will advance to a runoff election.