Donald Trump wasted no time celebrating Ken Paxton's stunning primary victory in Texas. Within a minute of the hardline attorney general triumphing over incumbent Senator John Cornyn, the president posted congratulations on social media and promised to hold rallies for him.
But Democrats moved just as fast. By 9:03pm, James Talarico, the Democrat challenging Paxton for the seat, was already reaching out to Cornyn's supporters with a direct message: your party abandoned you, but we won't.
Paxton's 64-36 demolition of Cornyn marks the widest primary defeat of an incumbent U.S. senator in nearly five decades. The result underscores Trump's grip over Republican voters. Yet it has also handed Democrats something they haven't had in decades: genuine hope of winning statewide office in Texas.
The aftermath revealed deep fissures in Republican leadership. After Trump's endorsement of Paxton last week, GOP senators on Capitol Hill made little effort to hide their dismay. Lisa Murkowski called herself "supremely disappointed." John Hoeven told reporters "oh boy" when discussing the endorsement. Senate Majority Leader John Thune offered a terse statement that he still backed Cornyn, regardless of Trump's choice.
The tension reflects a broader fear among establishment Republicans: that Trump's iron control over the party is costing them Congress. By backing more extreme candidates, they worry he is alienating exactly the voters Republicans need to win back in the general election.
Talarico's campaign seized momentum immediately. The campaign raised $600,000 in two hours after Paxton's win Tuesday night. He had already hauled in $27 million in the first quarter of 2026, the largest sum ever raised by a Senate candidate in that period. The Cook Political Report shifted its rating for the seat from "Likely Republican" to "Lean Republican."
Cook editor Jessica Taylor said polling shows the general election close or even tied, though she cautioned against calling it a toss-up yet. Still, Democrats believe Paxton is vulnerable. Beto O'Rourke, who narrowly lost to Ted Cruz in 2018, told the New York Times that Paxton is "too extreme and too tied to Trump" to appeal to independent voters.
The numbers tell a crucial story about what happens next. Nearly 1.4 million Texans voted in Tuesday's runoff, about 800,000 fewer than turned out for the March primary. Paxton drew roughly 886,000 votes this week, nearly the same as in March. Cornyn, who received 910,000 votes in spring, collapsed to just over 502,000.
The missing voters represent a seismic shift. Where did Cornyn's supporters go? Some likely stayed home. Others may cross over. Both campaigns now face the same equation: turnout will determine November's outcome.
Author James Rodriguez: "Trump has proven he can dominate a primary, but that primary victory may cost Republicans the seat and expose just how narrow his control really is when general election voters get their say."
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