DENVER — Colorado Rep. Lauren Boebert, an outspoken conservative and Second Amendment provocateur, lost her bid for a fourth term to Democrat Eileen Laubacher, a retired rear admiral in the Navy.

Laubacher was leading 48.8 percent to 47.9%, a margin of 3,441 votes, when The Associated Press called the race on Friday.

The red-hued 4th District, which spreads across eastern Colorado, was unexpectedly competitive this year, a sign of how deep into red turf Democrats were able to compete this year. Boebert had Donald Trump’s endorsement, but her relationship with the president has been strained at times after she began pressing for the release of files related to convicted sex offender Jeffrey Epstein.

Laubacher proved to be a strong fundraiser, hauling in $13.7 million as of mid-October to Boebert’s $1.2 million.

Boebert has been one of the most visible and controversial members of the House GOP conference since she won an upset primary in the 3rd District over five-term incumbent Republican Scott Tipton in 2020.

A newcomer to electoral politics, she quickly positioned herself as a disruptor on Capitol Hill, heckling former President Joe Biden during his 2022 State of the Union address and tangling with a fellow GOP firebrand, former Rep. Marjorie Taylor Greene of Georgia, on the House floor.

In 2023, Boebert was embroiled in an embarrassing incident in a Denver theater that was captured on surveillance video. She subsequently embarked on an apology tour.

Running for reelection the first time in the 3rd District, which is centered around Colorado’s rural Western Slope, Boebert barely won a closer-than-expected race against Democrat Adam Frisch in 2022. When Frisch announced he was trying again in 2024, Boebert switched to the 4th District, which had been considered far friendlier terrain for the GOP.

This year, Democrats won all of Colorado’s House seats, except in the 3rd District, which is held by Rep. Jeff Hurd.

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Mary Ellen McIntire contributed to this report.

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