Primary elections across multiple states Tuesday crystallized the cast of characters who will compete for control of the House this fall, with contests ranging from rematches in Iowa to generational battles in California and a clutch of open seats drawing Trump-backed challengers nationwide.
In Iowa, the two most competitive House races produced minimal surprises. Democrat Christina Bohannan will face Republican Rep. Mariannette Miller-Meeks for the third straight election in the southeastern part of the state, a rematch that follows their 2024 clash decided by just a few hundred votes. In the 3rd District anchored in Des Moines, Democrat Sarah Trone Garriott will run against GOP Rep. Zach Nunn, both of whom ran unopposed in their primaries.
The 2nd District, vacated by Republican Rep. Ashley Hinson's Senate bid, produced a clearer winner when former state Rep. Joe Mitchell secured the GOP nomination, backed by President Donald Trump. He will face Democrat state Rep. Lindsay James in the fall.
Across state lines, New Jersey Democrats nominated Rebecca Bennett, a healthcare executive and former Navy helicopter pilot, to challenge GOP Rep. Tom Kean Jr. in the 7th District battleground.
California's Unprecedented Role
California's role in reshaping the House cannot be overstated. The state hosts at least four major battleground races and several others capable of swinging competitive, driven in part by Democratic-controlled redistricting that flipped multiple districts from Republican strongholds to competitive or Democratic-leaning seats.
The state's unique top-two primary system, where all candidates appear on a single ballot regardless of party affiliation, created extraordinary dynamics across multiple districts. In the 22nd District near Fresno, Rep. David Valadao, the only remaining Republican House member who voted to impeach Trump, faced no Republican challengers. Instead, two Democrats battled for the second spot in November: establishment-backed state Assemblymember Jasmeet Baines and progressive local school board member Randy Villegas.
San Diego's 48th District presented a similar setup after redistricting transformed it from a safe Republican seat to a light-blue one, prompting GOP Rep. Darrell Issa to retire. Trump-backed Jim Desmond, a San Diego County Board of Supervisors member, competed against Democrats Marni von Wilpert and Ammar Campa-Najjar, who is making his third congressional run.
The 13th District near Fresno pits Democrat Adam Gray against former Stockton Mayor Kevin Lincoln, a Trump-backed challenger who narrowly lost to Democrat Josh Harder in 2024. California's 6th District in suburban Sacramento features newly independent Rep. Kevin Kiley, who recently left the Republican Party, running against a crowded Democratic field.
In the 1st District, a formerly Republican seat now favoring Democrats, two former state legislative leaders emerged as frontrunners: Democrat Mike McGuire and Republican James Gallagher. A special election for the same seat, held under the previous district lines that favor Republicans, also features Gallagher and McGuire among candidates vying to serve the remainder of former Rep. Doug LaMalfa's term after his death.
Democrat Jim Costa is positioned to face either military veteran and activists Lorenzo Rios or Kyle Kirkland, president of the California Gaming Association, in the Fresno-area 21st District, which leans Democratic. Freshman Democrat Derek Tran in the 45th District is likely headed for a general election against whoever emerges from a crowded Republican field in another blue-leaning seat.
Generational Clashes and Vulnerable Incumbents
California also produced a brutal primary between longtime incumbents. Reps. Young Kim and Ken Calvert, both Republicans, were forced into a member-on-member showdown in the 40th District spanning Riverside and Orange County after redistricting. The contest ranks among the nation's nastiest primaries, with the question of whether both advance or whether a Democrat, like Esther Kim Varet, can squeeze into the general.
Democratic incumbents faced generational pressure elsewhere in California. Rep. Mike Thompson, 75, confronted a challenge in the 4th District from Eric Jones, a mid-30s venture capitalist who loaned his own campaign $5 million to argue that fresh leadership was needed. Rep. Doris Matsui, 81, battled Sacramento City Council member Mai Vang, in her early 40s, in the 7th District, despite backing from Gov. Gavin Newsom. Vang secured support from progressive groups and The Sacramento Bee's editorial board.
Rep. Brad Sherman, 71, faced a crowded Democratic field in the 32nd District, including Jake Levine, who worked on climate policy in the Obama and Biden administrations. Rep. Jimmy Gomez, 51, in the 34th District encountered a Justice Democrats-backed challenger in community activist Angela Gonzales-Torres, who criticized him on Israel policy, though Gomez outraised her by a 5-to-1 margin with limited ad campaigns backing her candidacy. Rep. Linda Sánchez in the 41st District faced former state Assemblyman Hector De La Torre.
Open Seats and Progressive Fights
In New Jersey's 12th District, deep blue and now vacant after Rep. Bonnie Watson Coleman's retirement, progressive groups competed fiercely to shape the Democratic nominee. Adam Hamawy, a surgeon credited by Sen. Tammy Duckworth with saving her life in Iraq who was later stranded in Gaza during Israel's war with Hamas, secured the nomination. American Priorities, a group formed to counter spending by the American Israel Public Affairs Committee in Democratic primaries, spent heavily backing Hamawy in a race where Israel policy dominated.
In New Jersey's 9th District, Democrat Nellie Pou ran for re-election in a district Trump won by just 1 point, facing a Republican opponent to be determined between Clifton City Council member Rosie Pino and Tiffany Burress, an attorney and wife of former NFL player Plaxico Burress.
Former House Speaker Nancy Pelosi's retirement in California's 11th District triggered a competitive three-way Democratic battle. Pelosi backed San Francisco Supervisor Connie Chan, while state Sen. Scott Weiner carried the state party endorsement and Saikat Chakrabarti, a former aide to Rep. Alexandria Ocasio-Cortez, secured backing from progressive groups.
Montana's 1st District, which Trump carried by 11 points, is now open after Rep. Ryan Zinke announced his retirement. Trump backed combat veteran and radio host Aaron Flint over Secretary of State Christi Jacobsen and former state Sen. Albert Olszewski. Democrats nominated from a field including 2024 gubernatorial nominee Ryan Busse, firefighter Sam Forstag backed by prominent progressives including Bernie Sanders and Ocasio-Cortez, and education advocate Russ Cleveland.
New Mexico's 2nd District, where Trump won by less than 2 points in 2024, positions Democrat Rep. Gabe Vasquez to face former police officer Greg Cunningham, a Trump-backed candidate who secured the Republican nomination after his primary rival dropped out.
Former Labor Secretary Hilda Solis entered California's 38th District race seeking a return to Congress after her tenure in the Obama administration, though she faces competition from Pico Rivera City Council member Monica Sánchez, backed by Rep. Linda Sánchez.
South Dakota's sole House seat, now open after Rep. Dusty Johnson's gubernatorial run, went to Trump-backed Attorney General Marty Jackley, who won the GOP primary.
Author Sarah Mitchell: "These primaries are essentially deciding the House map months before November, and California's role is outsized given how redistricting transformed a conservative state's congressional delegation into genuinely competitive territory."
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