In one of the West's few swing races, a Democrat tries to keep a Trump district

What happened: Democrat Marie Gluesenkamp Perez, the incumbent in Washington's 3rd District, faces Trump-endorsed Republican state Sen. John Braun in a tight House race that will help decide the chamber's balance of power. Why it matters: Republican-aligned groups are spending to flip the district, one of about two dozen races deciding the House majority, while Democrats see holding it as urgent to securing control.

Democrat Marie Gluesenkamp Perez, the incumbent in Washington's 3rd District, faces Trump-endorsed Republican state Sen. John Braun in a tight House race that will help decide the chamber's balance of power.

Republican-aligned groups are spending to flip the district, one of about two dozen races deciding the House majority, while Democrats see holding it as urgent to securing control.