The battle for the House majority this fall hinges on a small cluster of highly competitive districts. Democrats, energized by off-year momentum and President Trump's weak approval ratings, need to flip just three seats to take control. Decision Desk HQ (DDHQ) projects they will succeed, forecasting a 226-209 Democratic House, while Republicans hold the Senate 50-50 with the vice president breaking ties.
DDHQ’s analysis zeroes in on eight toss-up races that could determine the outcome. Here’s a closer look at the key contests.
Florida’s 14th Congressional District
Republican-friendly redistricting in Florida could net the GOP up to four seats, but it may backfire in this district. Incumbent Rep. Kathy Castor (D) is defending a newly competitive seat after the lines were redrawn. She won by 15 points in 2024 under the old map, outperforming Vice President Harris. The GOP primary features more than a half-dozen candidates, including former state Rep. Mike Beltran and state Rep. Kevin Steele. But a recent St. Pete Polls survey shows Castor leading both, raising questions about a potential “dummymander.” DDHQ gives Democrats a 56 percent chance to hold the seat.
Florida’s 25th Congressional District
This Broward County district was dismantled by redistricting, prompting incumbent Rep. Debbie Wasserman Schultz (D) to move to the safe 20th District. Rep. Jared Moskowitz (D) is now running in the reconfigured 25th, facing a primary challenge from DSA-backed Oliver Larkin. Some Democrats worry Larkin’s progressive platform could hurt in the general. On the GOP side, former Boca Raton Mayor Scott Singer leads in fundraising. DDHQ calls this race a pure coin toss, with both parties tied in win probability.
Michigan’s 10th Congressional District
Republican Rep. John James is vacating his seat to run for governor, creating an open toss-up. President Trump has endorsed Army Capt. Michael Bouchard for the GOP nomination, prompting another candidate to exit. James won the district by 6 points in 2024, matching Trump’s margin. On the Democratic side, former special victims prosecutor Christina Hines, backed by EMILY’s List, is the frontrunner. DDHQ sees Democrats with a 51 percent chance of flipping the seat.
North Carolina’s 1st Congressional District
Rep. Don Davis (D) faces a 2024 rematch against Republican Laurie Buckhout in this northeastern district. Davis won by less than two points last time, but DDHQ now projects Buckhout will prevail with 51 percent of the vote and a 54 percent win probability. Cook Political Report calls Davis “without a doubt, the most vulnerable House Democrat in the country.” The district was redrawn to favor Republicans, and Buckhout, a retired Army colonel, has Trump’s endorsement. Both candidates are military veterans.
New York’s 17th Congressional District
Second-term Rep. Mike Lawler (R) is fighting to hold this purple district outside New York City, a top Democratic target. Lawler won by 6 points in 2024 while Harris carried the district by half a point. He raised $1.4 million in Q1, while Democratic challenger Cait Conley, a combat veteran, raised $1.7 million. Lawler had $4.8 million in the bank by June, far outpacing Conley’s $1.3 million. Conley won a competitive primary last month and served 16 years in the Army, later as Director for Counterterrorism on the National Security Council under President Biden. DDHQ gives Conley a 58 percent chance of winning.
Other toss-up races include Pennsylvania’s 8th District and additional seats that could tip the balance. With the House majority at stake, these eight contests will be the focus of intense spending and campaigning in the final months.
