The number of voters who cast absentee ballots in Idaho in 2020 broke records; the number was estimated to have been greater than 878,000. 87,330 voters registered on election day. Overall 878,527 ballots were cast in the 2020 election, putting statewide turnout at a little over 81%. The state swung overwhelmingly for incumbent Donald J. Trump, who won its 4 electoral votes with 63.8% of the popular vote. Idaho has consistently voted for Republican presidential candidates since 1976.
Idaho has a bicameral legislature with 35 senators and 70 representatives. Republicans have held the majority in both chambers since 1992. Governor Brad Little (R) is eligible for re-election in 2022.