Iowa Senator Joni Ernst, the first woman from Iowa to serve in the Senate and a combat veteran, won't seek reelection in 2026. She served since 2015, holding leadership positions and advocating for budget cuts. Her decision creates a competitive Senate race, with Republican Rep. Ashley Hinson already planning a run. Democrats also plan to compete, though they haven't won a Senate race in Iowa since 2008. Ernst's time in office included notable votes, like supporting Defense Secretary Pete Hegseth's confirmation, and controversial remarks about Medicaid cuts.

Prepared by Lauren Mitchell and reviewed by editorial team.