Headline Roundup • May 18th, 2026
Sen. Bill Cassidy Defeated in Louisiana Primary By Trump Endorsed Challenger
Summary from the AllSides News Team
Sen. Bill Cassidy (R-LA) was defeated in Louisiana's primary election on Saturday. Several major outlets, like The New York Times (Lean Left bias) and Fox News (Right), framed the news as a victory for Trump.ย
Wrong Priorities: The Wall Street Journal Editorial Board (Lean Right) noted that Trump's approval rating is only at 40% and criticized him, arguing his "revenge campaign has already made the Senate harder to hold." The Board said he "drove incumbent Thom Tillis into retirement in North Carolina, and Democrats have a strong candidate who is now the favorite." It also noted that he said Sen. Susan Collins should "never be elected to office again" in Maine, which is a blue state, and has refused to endorse Sen. John Cornyn in the Texas primary, despite Republican pleas to do so. The Journal concluded Republicans could drop to 49 Senate seats, and Trump would spend the last two years of his presidency as a lame duck.
Cassidy's Revenge: Steve Benen of MS NOW (Left) noted that "almost all" 17 Republican lawmakers who voted to impeach Trump in 2021 have been ousted from power. Benen argued that in his final six months in power, Cassidy could "keep voting as he's been voting and will just coast through the next six months in relative obscurity" or "become a real thorn in the side of the president who ended his career."
The Details: Cassidy was defeated by the Trump-backed Rep. Julia Letlow and Louisiana Treasurer John Fleming, who received 45% and 28% of the vote, respectively. Cassidy received under 25%, eliminating him from the race, which will head to a runoff. He is the first elected Republican senator to lose renomination since 2012.ย
For Context: In 2021, Cassidy voted to convict Trump on an article of impeachment with insurrection charges. Previously, Louisiana's election system was an open primary, though the state's Republican leadership recently changed the format to a closed primary. Cassidy had traditionally received support from independents and Democrats.
Written by the AllSides staff (of humans).ย Learn more.ย Support our mission. Suggest an improvement to this summary.
Featured Coverage of this Story
After Donald Trump left the White House in early 2021, many prominent figures in Republican politics assumed that he'd effectively set his political career on fire. By any sane measure, this was an understandable assumption: The then-former president had just plotted to seize illegitimate power and bore responsibility for an insurrectionist attack on his own country's seat of government.
The idea that Trump would maintain a leadership role in American politics wasn't just wrong; at the time, it seemed utterly ridiculous.
Two-term Republican U.S. Senator Bill Cassidy lost his bid for re-election in Louisiana's primary on Saturday, as Trump-backed challenger Julia Letlow and state Treasurer John Fleming โadvanced to a June runoff to choose the party's nominee after a closely fought three-way battle.
Cassidy, a physician who first earned the president's ire by voting for his conviction โin Trump's second Senate impeachment trial in 2021, was projected to finish in third place in a political victory for Trump's retribution campaign that recently unseated several Republican senators in Indiana who defied his...

Gerald Herbert/Associated Press
President Trump proved again Saturday that he can crush Republican dissenters by helping to defeat Sen. Bill Cassidy in a Louisiana primary. The question is to what end?
Mr. Cassidy earned Mr. Trump's eternal enmity when he was one of seven GOP Senators who voted to convict him after he was impeached a second time in 2021 after the Jan. 6 Capitol riot. It was a vote of conscience for Mr. Cassidy, but fealty counts for more than principle in the Trump universe.
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