The Republican primary races unfolding across six states on Tuesday will provide a crucial measure of Donald Trump's enduring control over his party. In Kentucky, Georgia, and Alabama, Trump-endorsed candidates face well-funded, determined challengers willing to spend extraordinary sums to block his preferred nominees, in stark contrast to typical primary cycles where a presidential endorsement clears the field.
The most visible battle pits Representative Thomas Massie of Kentucky against Ed Gallrein, a retired Navy SEAL backed by Trump. Massie earned the president's wrath by opposing his major legislative priorities, campaigning to release the Epstein files, and becoming a vocal critic of U.S. military action in Iran. Trump traveled to Kentucky to hold a rally for Gallrein, signaling the endorsement's importance to his political operation.
Trump allies have poured unprecedented resources into the race. With over $30 million in advertising spending already logged, it has become the most expensive House primary in recent memory, according to media tracking firm AdImpact. The scale of spending underscores how seriously establishment figures are treating the challenge to Trump's influence.
Massie's defiance matters strategically beyond Kentucky. If he wins despite Trump's opposition, he would position himself as a potential leader of Republican dissent within the party, offering a counterweight to Trump's dominance. Massie has leaned into his independent streak rather than shrinking from the confrontation.
The timing amplifies Trump's challenges. Just days earlier, Senator Bill Cassidy of Louisiana lost his primary after crossing Trump on key votes, which appeared to validate Trump's power. The Kentucky result will either reinforce that lesson or shatter it entirely.
Georgia's gubernatorial primary presents a different test of Trump's sway. He endorsed Lt. Gov. Burt Jones early in what initially looked like a two-man race between Jones and Brad Raffensperger, the Georgia secretary of state whom Trump targeted for refusing to overturn the 2020 election results in the state.
Then billionaire Rick Jackson entered the race in February. A former business partner of Jeb Bush, Jackson has already spent $83 million of his own money, much of it on television ads attacking Jones as a career politician. This self-funded juggernaut has scrambled the Trump endorsement's usual clearing effect.
Polls show Jackson and Jones leading the field, but with Raffensperger and others still competing, a June 16 runoff election appears likely if no candidate exceeds 50 percent of the vote on Tuesday.
In Alabama's Senate race, Trump endorsed Representative Barry Moore for the seat being vacated by Senator Tommy Tuberville, the former football coach who is running for governor. Yet Alabama Attorney General Steve Marshall and retired Navy SEAL Jared Hudson are mounting serious campaigns despite Trump's backing. Moore has spent the most money in the race, but the margin is tight, and a runoff looms.
Trump has notably stayed silent on Georgia's Republican Senate primary, where Governor Brian Kemp has instead mobilized his political apparatus. Kemp is backing Derek Dooley, a former University of Tennessee football coach, who is locked in a tight three-way battle with Representatives Mike Collins and Buddy Carter. Polls suggest Collins is most likely to advance to a June runoff, with two other candidates also in contention.
On the Democratic side, former President Joe Biden has broken his recent silence to endorse Keisha Lance Bottoms, a former Atlanta mayor and Biden administration official competing in Georgia's gubernatorial primary. Bottoms is favored to place first in a crowded field that includes former Lt. Gov. Geoff Duncan, who switched from Republican to Democrat after breaking with Trump, along with state Senator Jason Esteves, state Representative Derrick Jackson, and Michael Thurmond, the party's 2010 Senate nominee.
Pennsylvania's most competitive Democratic contest centers on the Lehigh Valley, where four candidates are racing to challenge Republican Representative Ryan Mackenzie, who won his 2024 election by just 4,000 votes. Bob Brooks, a firefighters union president, has assembled an unusual alliance that includes Governor Josh Shapiro, Senator Bernie Sanders, former Transportation Secretary Pete Buttigieg, and the House Democrats' campaign arm. Yet Ryan Crosswell, a former Justice Department lawyer backed by the liberal veterans group VoteVerts, and Lamont McClure, a former Northampton County executive, offer real competition. A Republican super PAC has begun funding ads to boost McClure, further scrambling the race.
Beyond candidate races, Georgia's Supreme Court will also draw attention on Tuesday. Two Republican-appointed justices are facing re-election challenges backed by former President Barack Obama, former Vice President Kamala Harris, and other leading Democrats hoping to shift the court's ideological balance. Eight of the nine current justices were appointed by either former Republican Governor Nathan Deal or Governor Kemp.
In other contests, Oregon Governor Tina Kotek, a Democrat seeking re-election, will first face primary challengers. The Republican nomination chase includes Christine Drazan, who lost to Kotek four years ago, and Chris Dudley, a former NBA player, who has received financial backing from Nike co-founder Phil Knight. Idaho Governor Brad Little, endorsed by Trump, appears positioned to secure nomination for a third term without serious challenge.
Author Sarah Mitchell: "Trump's presumed immunity to primary challenges is cracking under the weight of billionaire money and genuine ideological resistance, and Tuesday will reveal whether his grip has finally started to slip."
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