There are 125 state legislative seats up for election this year in Indiana. Nine of those seats will be left open by incumbents who did not file to run for re-election. From 2010 to 2024, the average number of retirements per election cycle was 13. The highest number of incumbents who did not run for re-election was 24 in 2012, and the lowest was 7 in 2014.

Of the nine 2024 retirements, eight are in the House, while one is in the Senate. This is the fewest Senate incumbents retiring in an election cycle since 2010. Multiple previous years had two Senate retirements, while the highest in a given year was eight in 2016. The total of eight House retirements is close to the 2010 to 2024 average of 10.

Eight of this year’s retiring incumbents are Republicans and one is a Democrat. The average number of retirements by party from 2010 to 2024 is eight for Republicans and five for Democrats.

Indiana has been a Republican trifecta since 2011, when Republicans gained a majority in the House. Republicans have held a majority in the Senate since at least 1992, and the governor has been a Republican since 2005.

Indiana’s state legislative primaries are scheduled for May 7.