Republicans will hold a slim majority in the House of Representatives next year, facing greater challenges to advance President-elect Donald Trump’s agenda as Democrats successfully flipped a significant seat in California. Democrat Adam Gray defeated GOP Rep. John Duarte in California’s 13th District, according to NBC News projections, following an extended vote count. This brings the Republican total to 220 seats versus 215 for Democrats. With such a narrow margin, Republicans can afford to lose only two votes on any House legislation if Democrats remain unified in opposition.
Duarte conceded the race on Tuesday evening, saying he called Gray to acknowledge the outcome, as reported by the Turlock Journal. This victory marks a crucial gain for Democrats, who flipped nine Republican-held seats across the nation, including three in California, while Republicans flipped eight Democratic-held seats.
California proved pivotal for the Democrats, with Gray’s win accompanied by victories for Democrats Derek Tran and George Whitesides, who unseated Republican Reps. Michelle Steel and Mike Garcia. Democrats also secured three seats in New York, one in Oregon, and benefited from redrawn congressional maps to flip one seat each in Alabama and Louisiana.
Meanwhile, Republicans gained seats in North Carolina due to its new congressional map and won key contests elsewhere. They unseated Democratic Reps. Susan Wild and Matt Cartwright in Pennsylvania, flipped an open seat in Michigan, and defeated incumbents in Alaska and Colorado.
House races this election cycle attracted significant spending from campaigns and outside groups. Ad-tracking firm AdImpact reported that over $1.1 billion was spent on ads between September and Election Day. Democratic campaigns and allied organizations outpaced their Republican counterparts, spending $662 million compared to $485 million spent by the GOP.
The tight Republican majority reflects an increasingly competitive political landscape, partly influenced by the latest redistricting process. This narrowed the field of competitive races, leaving only about 40 House seats—roughly 10% of the chamber—decided by margins of less than 5%, according to NBC News Decision Desk data.
Despite losing control of the House, Democrats saw some encouraging trends. Vulnerable Democratic incumbents performed notably better than Vice President Kamala Harris, outpacing her by an average of 2.7 percentage points in House races, according to preliminary analysis by the Democratic Congressional Campaign Committee. The analysis, shared with NBC News, highlighted that Democratic candidates outperformed Harris in counties with lower education levels and a majority of voters of color.
Challenges Ahead for GOP Leadership
With Republicans controlling both chambers of Congress and the White House, the party has a rare opportunity to advance its priorities through budget reconciliation. This legislative tool enables the majority party to bypass Senate filibusters and pass budget-related measures without needing Democratic support. However, the fragile Republican majority in the House could hinder these efforts.
Speaker Mike Johnson, who is expected to retain his position in the next Congress, will face significant hurdles in maintaining unity among his colleagues. The reconciliation package is expected to include extensions of tax cuts enacted in 2017 under Trump, which are set to expire next year. Proposals such as a tax exemption for income from tips, dubbed by Trump as “no tax on tips,” and the removal of the cap on the state and local tax deduction are likely components of this package.
Sen. Lindsey Graham of South Carolina, a key Trump ally, is advocating for border security measures to be included in the reconciliation process. Trump has promised to initiate what he describes as “the largest deportation program in American history,” making immigration a central focus for his administration.
Further complicating the GOP’s legislative strategy are potential resignations and vacancies within the House. Trump has nominated two sitting House Republicans for key positions in his administration: Elise Stefanik of New York as U.S. ambassador to the United Nations and Mike Waltz of Florida as national security adviser.
Adding to the uncertainty is the recent resignation of Florida Rep. Matt Gaetz, who stepped down after Trump selected him as the next attorney general. Gaetz later withdrew from consideration due to allegations of sexual misconduct but confirmed he would not join the next Congress despite winning re-election.
Should Stefanik and Waltz resign simultaneously, the Republican majority in the House could narrow to just one seat, 217 to 215, until their replacements are elected.
Special Elections on the Horizon
Efforts to fill these vacancies are already underway. Florida’s State Department has scheduled a special election to replace Gaetz and Waltz, with primaries for their deep-red districts set for January 28 and special elections to follow on April 1.
In New York, Democratic Governor Kathy Hochul will be responsible for setting a special election to replace Stefanik once she formally resigns. According to state law, the special election must take place 70 to 80 days after the governor issues a proclamation.
The upcoming special elections will be critical for both parties as they navigate the challenges of a closely divided Congress. For Republicans, maintaining unity and avoiding further internal divisions will be essential to advancing their legislative priorities. Meanwhile, Democrats will likely leverage their gains to resist key aspects of Trump’s agenda, ensuring a contentious political landscape in the months ahead.