Gallego's win is the fourth straight for Democrats after decades of defeats and comes in a disappointing cycle for the party elsewhere.

Rep. Ruben Gallego (D-Ariz.) is projected to beat Republican Kari Lake in a consequential race for a seat in the Senate, dealing the former local news anchor her second straight electoral loss,

Republicans flipped Democratic-controlled Senate seats in West Virginia, Ohio, Pennsylvania and Montana. In the latter three cases, defeated Sens. Sherrod Brown, Bob Casey and Jon Tester also ran ahead of Harris but couldn't overcome their states' shifts toward the GOP.