Iowa Democrat Catelin Drey won a major upset on Tuesday night, flipping a deep-red seat in the state Senate and breaking the GOP's supermajority in the chamber. Drey defeated Republican Christopher Prosch by a wide 55-45 margin in a district Donald Trump carried by 11 points last year. It's the second conservative district that Iowa Republicans have lost in the legislature this year, and the results will further buoy Democratic hopes for similar victories in contests for governor and the U.S. Senate in 2026.