The most expensive gubernatorial primary in American history reaches its climax today in Georgia, and the outcome will tell us something important about how the Republican Party actually works in 2026.
Governor Brian Kemp, who famously refused to help overturn the 2020 election results and has spent the subsequent years as Trump's most prominent intraparty antagonist, faces a runoff against a challenger carrying the former president's explicit endorsement. Kemp's campaign and allied super PACs have spent north of $100 million defending his seat — a staggering sum for a primary that, in normal times, an incumbent governor would win by default.
The money question
The sheer financial asymmetry makes Georgia a controlled experiment. Kemp's operation has carpet-bombed the state with advertising, outspending his opponent by roughly four-to-one on television alone. His campaign has emphasized economic development wins — the Rivian plant, the Hyundai facility, the film industry's continued presence — and pitched Kemp as a results-oriented conservative who governs rather than grievances.
His opponent, meanwhile, has run a lean operation built almost entirely around one asset: Trump's endorsement. The theory is simple. In a Republican primary, nothing else matters. Yard signs, door-knocks, and the former president's social media posts should be sufficient to overcome any spending deficit.
What we're actually testing
Since 2016, the conventional wisdom has held that Trump's endorsement is the single most valuable commodity in Republican politics. But the evidence is more mixed than the narrative suggests. In 2022, several high-profile Trump endorsees — Mehmet Oz, Herschel Walker, Kari Lake — lost winnable general elections. In primaries, his record is stronger but not unblemished.
Georgia offers the cleanest test case yet. Kemp is not a moderate squish who can be dismissed as a RINO; he signed some of the most conservative legislation in the country on voting, abortion, and guns. His sin, in Trump's eyes, is singular and specific: he declined to participate in overturning an election. Today's voters will decide whether that sin is disqualifying, or whether a governor who delivers economic growth and conservative policy can survive Trump's wrath.
The national stakes
Republican donors and strategists are watching Georgia with more than casual interest. If Kemp survives, it suggests a template: incumbents with strong records can insulate themselves from Trump's displeasure through overwhelming financial force. If he loses, the lesson is darker — no amount of money can overcome a Trump endorsement in a GOP primary, and the party's donor class should stop trying.
Either outcome reshapes the 2028 landscape. A Kemp victory keeps alive the possibility of a Republican Party that can occasionally defy Trump and live. A Kemp defeat suggests that possibility died years ago, and everyone is just now noticing.
Our take
The honest answer is that we don't know what Georgia will tell us, because we don't know what Georgia will do. But the fact that Kemp had to spend $100 million to make this race competitive already tells us something. In a healthy political party, a successful incumbent governor doesn't need nine figures to survive a primary. That Kemp does — regardless of today's outcome — suggests the Republican Party's internal dynamics remain fundamentally broken, hostage to one man's approval in ways that no amount of money can fully remedy.
