John Cornyn

In his inaugural address, President John F. Kennedy warned against trading one form of tyranny for another. “Those who foolishly sought power by riding the back of the tiger ended up inside.”

On Tuesday night, the establishment wing of the Republican Party found out once more what that feels like.

John Cornyn, the 23-year incumbent U.S. senator from Texas, lost his Republican primary runoff to state Attorney General Ken Paxton — a man impeached by the Republican-controlled Texas House on bribery and corruption charges just three years ago. The margin was not close. The message was not subtle.

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Formed from the Tea Party — fed and groomed for years by the party’s leaders — the tiger of Trumpism turned on another of its loyal keepers.

A different party

It is worth remembering what things looked like before any of this began.

Under President George W. Bush — first as governor, then as president — Texas Republicans understood something important: you govern by building coalitions, not by stoking grievances. When I was in the Texas House in the 1990s, Democrats and Republicans argued hard all day, sometimes bitterly, but they knew that governing required the other side. Bush drew bipartisan support. That wasn’t weakness; it was the source of his strength.

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With the rise of the Tea Party, politicians like Bush were considered too willing to govern across the aisle and to acknowledge that the other side even existed. What the Tea Party wanted was a different kind of Republican — one who fought, inflamed, and never compromised. Republican politicians obliged. They fueled the movement and rode the wave, telling themselves they were at the head of the Tea Party and could control its direction.

They were wrong. At some point, the Tea Party movement became the Trump Party.

The transformation did not happen by accident. The Tea Party’s energy was real — rooted in frustration with government spending and a sense that Washington had stopped listening. But GOP politicians provided the amplification. They embraced the rhetoric and calculated that a more energized base meant bigger margins.

What they did not calculate was that movements have their own momentum. The question stopped being “are you conservative enough?” and became “are you loyal enough?” Those are very different tests, and the second one has no floor.

Donald Trump did not create this dynamic. He inherited it, recognized it and mastered it. The GOP establishment had already spent a decade building the engine. He simply got behind the wheel and stepped on the gas.

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What Cornyn did — and didn’t do

By any reasonable measure, Cornyn is a conservative’s conservative: a lifetime American Conservative Union rating near 90, former Senate majority whip, one of the most powerful Republicans in Washington for two decades. But he made one mistake the tiger did not forgive: in both 2016 and 2024, he stayed neutral in the Republican presidential primary rather than endorsing Trump early.

Trump cited it explicitly when he endorsed Paxton, saying Cornyn “was not supportive of me when times were tough.” That single act — not opposition, not criticism, just neutrality — became a permanent ledger entry.

The tiger holds grudges and has a long memory.

Cornyn spent years trying to make amends. He voted with Trump. He recalibrated, accommodated, adjusted. Senate leadership urged Trump to back him.

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None of it was enough.

Ken Paxton was impeached by his own party’s supermajority in the Texas House in 2023 on charges of bribery, abuse of office, and obstruction. He settled a whistleblower lawsuit brought by his former staff. He has faced a federal investigation into his conduct as attorney general.

And yet he beat a 23-year incumbent U.S. senator by nearly 20 points.

Trump called Paxton a “true MAGA warrior” — and that was the crowning touch. Paxton’s scandals were not disqualifying; they were “evidence” that he had the right enemies. This is what the tiger looks like when it is fully grown.

Cornyn is not a villain in this story. He is a cautionary figure — a skilled legislator and partisan who spent more than two decades building a career in a party that, in the end, moved somewhere he hadn’t followed fast enough. He tried to stay current with a base that kept moving the goalposts. It wasn’t enough, by nearly 20 points.

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Cornyn is not alone. The pattern is the same everywhere: institutional support, experience, and record mean nothing against a Trump endorsement and a MAGA label. The establishment didn’t just lose a Senate race Tuesday night. It lost an argument.

The generation of politicians who came after Bush made a bet: that they could ride the energy of populist anger into durable power. For a while, they were right. But movements, once legitimized, do not stay subordinate. They grow. They develop their own demands, their own definition of loyalty. And when the accounting comes — when the tiger turns around — it does not ask who fed it first.

There is a time when every problem is big enough to see but still small enough to solve. Establishment Republicans didn’t pay close attention. John Cornyn found that out Tuesday night. He will not be the last.

Pete P. Gallego represented far West Texas in the Texas Legislature from 1991 to 2013 and in Congress from 2013 to 2015, and then served as president of Sul Ross State University.

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