Tennessee Republican Andy Ogles became the ninth sitting U.S. House member to lose a primary this year when former state Agriculture Commissioner Charlie Hatcher defeated him by roughly 53 percent to 47 percent on Thursday night. That win pushes 2026's incumbent casualty count to six Democrats and three Republicans — the largest number of House primary defeats in a year without nationwide redistricting since 1970, according to figures NBC News compiled from Vital Statistics on Congress. More than a dozen states still haven't voted, so the count isn't final.
Two distinct currents are driving the wave. Among Republicans, the common denominator is friction with President Donald Trump. Among Democrats, it's almost the reverse — primary voters punishing candidates they view as too cautious, too centrist, or simply too entrenched.
Republicans Learn a Trump Endorsement Isn't a Guarantee
Ogles wasn't short on presidential support. Trump had publicly praised him hours before polls closed as a lawmaker "doing a fantastic job," and Hatcher beat him anyway — making Ogles one of the rare Trump-endorsed candidates to actually lose this cycle.
That wasn't true of the two Republicans who fell before him: Kentucky's Thomas Massie and Texas's Dan Crenshaw, both of whom lost precisely because Trump wanted them gone.
Massie, a libertarian-leaning lawmaker who'd held Kentucky's 4th District for fourteen years, had broken with the president over Iran policy, federal spending, and a push — alongside California Democrat Ro Khanna — to force release of Justice Department files on Jeffrey Epstein. His Trump-backed challenger, Navy veteran Ed Gallrein, won by roughly ten points in what multiple outlets, including the Washington Post, called the costliest House primary in American history — north of $32 million in spending, much of it from pro-Israel advocacy groups opposed to Massie's votes against additional military aid. Conceding, Massie told supporters, "We stirred up something." Kentucky political scientist Stephen Voss offered a sharper read on the same broadcast, framing the result as proof that any Republican who defies the president does so at real political risk.
Crenshaw's loss carried a similar warning, though the exact size of it is worth untangling. The Houston-area congressman was the only Texas Republican seeking reelection without Trump's backing, and after a reported blowup with Sen. Ted Cruz at an airport, Cruz endorsed primary challenger and state Rep. Steve Toth instead. On election night, the Associated Press's call had Toth ahead by roughly 18 points, a spread NBC News pegged at nearly 19. Three days later, though the Texas Tribune described the outcome as "a decisive 15-point margin, according to unofficial returns" — a smaller number, though one the Tribune itself still called unofficial rather than final. Either way, Crenshaw lost decisively, and in his own telling to reporters, the deciding factor wasn't his voting record so much as a wave of viral claims about his finances and gun-policy positions that his campaign couldn't out-message in time.
Progressives Take Aim at the Democratic Establishment
All six of 2026's Democratic incumbent losses came from challengers running to the left, several tied to the Democratic Socialists of America.
In New York City, two candidates backed by Mayor Zohran Mamdani ousted sitting Reps. Dan Goldman and Adriano Espaillat on the same night in late June. Goldman lost to former city Comptroller Brad Lander by a lopsided 24 points, while Espaillat's contest against community organizer and public-defender's-office investigator Darializa Avila Chevalier came down to a margin under four points.
In Colorado, 29-year-old democratic socialist Melat Kiros toppled 15-term Rep. Diana DeGette in a race the AP first called with roughly a five-point Kiros lead that later widened to about ten points once the count wrapped up. "This is a movement," Kiros told a jubilant crowd afterward. Weeks later in Michigan, state Rep. Donavan McKinney — running with Sen. Bernie Sanders's backing — edged two-term Rep. Shri Thanedar by roughly four points in a Detroit-based district.
Texas's New Map Pits Democrat Against Democrat
Two more Democratic losses trace directly to Texas's mid-decade redistricting, engineered by state Republicans to squeeze extra GOP seats out of the map. The redraw forced longtime Houston Rep. Al Green into the same district as freshman colleague Christian Menefee. After the pair split the March primary almost evenly, Menefee won the runoff in a landslide, roughly 69 percent to 31 percent. The same night, Dallas-area Rep. Julie Johnson lost her own seat to her predecessor, former Rep. Colin Allred, who had dropped a U.S. Senate campaign to reclaim the House seat he'd previously held — Allred won by roughly eight points.
A tenth Texas Republican, Tony Gonzales, also faced a runoff this cycle after admitting to an affair with former staffer, who later died by suicide. Rather than face voters, he ended his campaign days after being pushed into the runoff — and that wasn't the end of it. The following month, he resigned from Congress entirely, framing the move in a social-media post as a matter of faith rather than political survival. Analysts tracking the cycle count his exit separately from the nine confirmed ballot-box defeats, since voters never actually got the chance to render a verdict.
A Cycle Defined by Turnover
The primary losses are stacking on top of an already turbulent year for congressional churn. As of this week, NBC News counts 62 House members who've opted not to seek another term in 2026, though earlier trackers logged smaller totals as the cycle unfolded — one count put House retirements at 57 as of late April, while NPR's running tally stood at 58 in late May. The number has clearly kept climbing all year. Two sitting senators — Republicans Bill Cassidy of Louisiana and John Cornyn of Texas — also lost their primaries in 2026, a sign the volatility isn't confined to the House.
Analysts see the primary defeats and the retirement wave as two symptoms of one underlying story: a restless electorate in both parties pulling toward its ideological edges and losing patience with long-tenured incumbents. Republicans are facing loyalty tests tied to Trump; Democrats are working through a generational and ideological reckoning playing out district by district. With several states still to vote, both parties are watching to see how many more incumbents join the list before Election Day on Nov. 3, when control of the House will be decided.
