Navy veteran Eileen Laubacher defeats Rep. Lauren Boebert in Colorado’s 4th District

Key points

• The Associated Press declared Democrat Eileen Laubacher the winner of Colorado’s 4th District race on November 13, 2026, defeating incumbent Republican Rep. Lauren Boebert.
• Laubacher, a retired two-star Navy rear admiral and Afghanistan veteran, had previously served on the National Security Council under the Biden administration and registered as a Democrat in 2025.
• The race was extremely close, with The Guardian reporting a margin of less than 1 percent, while earlier archive data suggested a lead of approximately 3,400 votes.
• Boebert, who shifted from the 3rd to the 4th District in 2024 to avoid a tight race, blamed her defeat on 'dark money' from Hollywood and the Senate’s failure to pass House-approved bills.
• The loss is part of a national 'blue wave' in the 2026 midterms, where many GOP incumbents lost their seats despite holding conservative strongholds.
• Boebert’s tenure was marked by multiple controversies, including clashes with President Trump over the release of Jeffrey Epstein files and an ethics complaint regarding alleged relationships with staffers, which she denied.

Background

Rep. Lauren Boebert first entered Congress in 2020 after upsetting Scott Tipton in the Republican primary. She won re-election in 2022 by a narrow margin of 546 votes in Colorado’s 3rd District. In 2024, she shifted to the 4th District, which is more conservative, and won re-election more easily. Her relationship with President Trump soured in 2025 when she joined Democrats in signing a discharge petition to force a vote on releasing Justice Department files related to Jeffrey Epstein, an action Trump opposed. This conflict led to public insults from the President and the veto of a bill Boebert sponsored for a drinking water project in her district.

How outlets are covering it

The Washington Post and NBC News emphasize the financial disparity in the campaign, noting that Laubacher was far better funded than Boebert, which contributed to her victory in a district that had previously supported Trump by a wide margin. The Guardian highlights the narrowness of the margin, describing it as less than 1 percent, and notes that Laubacher only registered as a Democrat in 2025, a move Boebert criticized as a strategic maneuver to run for office. ABC News provided a brief projection of the loss without extensive analysis. All sources agree that Boebert’s defeat is a significant upset in a traditionally Republican stronghold and part of a broader national trend. Boebert’s own perspective, as reported by NBC News and The Washington Post, attributes her loss to excessive Democratic spending and legislative failures, while Laubacher framed her victory as a mandate for service and integrity over party labels.

Why it matters

The loss of Rep. Lauren Boebert signals a potential shift in the political landscape of Colorado and the broader Midwest, where conservative strongholds are becoming more competitive. As a prominent figure in the MAGA movement, her defeat may influence the dynamics of the Republican Party and its relationship with President Trump, especially given their recent public conflicts. The victory of a military veteran with a bipartisan background could also impact policy discussions on national security and rural issues in the House of Representatives.

What to watch

Eileen Laubacher is expected to take office in January 2027, replacing Boebert in the House of Representatives. The Republican Party will likely need to select a new candidate for Colorado’s 4th District for the 2028 election cycle. Boebert’s departure may also lead to internal discussions within the GOP regarding strategy in conservative districts facing Democratic surges. The outcome of this race will be closely watched as an indicator of the strength of the 2026 midterm 'blue wave' and its implications for the 2028 presidential election.