Republicans have clinched a state Senate majority, four months before a single ballot is cast.
Eight Republican senators will be unopposed for reelection.
Democrats filled four ballot vacancies ahead of Tuesday’s deadline, but even if they run the table in the November election, that would leave them with 24 seats, extending the Republican majority the party has held for 44 years.
Democrats would need to gain six seats to crack Republicans’ supermajority.
Libertarians nominated candidates in four Indiana House districts.
