Retired Rear Adm. Eileen Laubacher, a Democrat, will flip Colorado’s 4th District, CNN’s Decision Desk projects, ending conservative firebrand Rep. Lauren Boebert’s tenure in Congress.

Boebert’s loss comes after she elected to run in a more conservative district last cycle in an effort to preserve her political future. But Laubacher, who served more than three decades in the Navy, capitalized on the national headwinds against the GOP and focused her campaign on affordability issues.

The win denies Boebert, an ally of President Donald Trump and one of the most outspoken conservatives in the House Republican conference, a fourth term. Boebert was first elected in 2020, after she upset a fifth-term Republican incumbent in a primary.