Bill Cassidy was one of seven Republican senators who voted to convict Donald Trump in his second impeachment trial. Now, five years later, the last institutional remnant of Cassidy's influence in Louisiana politics has been swept away, replaced by a Trump loyalist who owes her political existence to the president's endorsement.
Julia Letlow's victory in Louisiana's Republican Senate runoff is not merely another data point in Trump's ongoing domination of his party. It is the capstone of a methodical revenge campaign against the senators who broke with him over January 6th—a campaign that has now achieved something close to total success.
The Cassidy problem
When Cassidy voted to convict in February 2021, he did so knowing the political cost. Louisiana's Republican Party censured him within days. But Cassidy, a physician who had built his political brand on healthcare policy rather than ideological combat, calculated that he could weather the storm. His Senate term ran until 2027, and Louisiana voters had historically rewarded incumbents who delivered federal dollars.
That calculation proved catastrophically wrong. Cassidy announced last year he would not seek re-election, recognizing that a Trump-endorsed primary challenger would almost certainly end his career. His departure created an open seat, and the runoff became a proxy war between what remains of the pre-Trump Republican establishment and the president's loyalist faction.
Letlow, who entered Congress in 2021 after winning a special election following her husband's death from COVID-19, secured Trump's endorsement early. Her opponent had ties to Cassidy's political network—enough to make the race a referendum on whether any space remains in the Louisiana GOP for those who once questioned Trump.
The impeachment seven
Of the seven Republican senators who voted to convict Trump, the scorecard is now nearly complete. Richard Burr of North Carolina retired. Pat Toomey of Pennsylvania retired. Rob Portman of Ohio retired. Ben Sasse of Nebraska resigned to become a university president. Mitt Romney of Utah announced he would not seek re-election. Lisa Murkowski of Alaska remains, having survived a 2022 challenge in Alaska's unusual ranked-choice system.
Cassidy is the sixth to exit, and his departure is arguably the most symbolically complete. The others left on their own terms or, in Murkowski's case, benefited from electoral rules that diluted Trump's influence. Cassidy's seat, by contrast, has now been handed to a Trump loyalist in a race that explicitly relitigated his impeachment vote.
What Letlow represents
Letlow is not a bomb-thrower in the Marjorie Taylor Greene mold. She has cultivated a softer image, emphasizing her background as an educator and her personal tragedy. But her political positioning is unambiguous: she has been a reliable vote for Trump's priorities and has shown no inclination toward the institutional independence that defined Cassidy's Senate tenure.
This is the new model for Republican success in deep-red states. Ideological reliability to Trump, combined with enough personal biography to avoid seeming purely transactional. Letlow's widow-to-congresswoman-to-senator arc provides exactly the kind of narrative that makes voters feel they are choosing a person rather than a faction.
Our take
The purge is functionally complete. Five years after January 6th, the Republican Party has excised nearly everyone who suggested Trump bore responsibility for that day. This is not surprising—parties discipline dissent—but the thoroughness is remarkable. Letlow's victory means that Louisiana, a state whose senior senator once called Trump's behavior "impeachable," will now be represented by someone who has never uttered a critical word about the president. The message to any future Republican officeholder contemplating a break with Trump is unambiguous: there is no survival outside the fold.
