Former Sen. Mitt Romney (R-Utah) on Sunday described Sen. Bill Cassidy's defeat in the Louisiana Republican Senate primary as "a loss for the country." Cassidy lost Saturday under Louisiana's newly closed primary system after years of disagreement with former President Donald Trump stemming from his vote to convict Trump during the Jan. 6, 2021, impeachment trial.
Cassidy served three terms in the Senate and chaired the Senate Health, Education, Labor and Pensions Committee. The Louisiana senator was one of seven Republican senators who voted to convict Trump after the Capitol attack, and one of only three remaining in office following previous primary losses by his colleagues.
What the Left Is Saying
Romney, a frequent critic of Trump, posted on X that Cassidy represented "an exceptionally brilliant and creative mind" with medical expertise that would be lost from Congress. "Bill Cassidy's departure is a loss for the country," Romney wrote. The former Massachusetts governor was the only Republican senator to vote to convict Trump in both impeachment proceedings.
In 2021, Romney stated his reasoning for supporting conviction: "President Trump also violated his oath of office by failing to protect the Capitol, the Vice President, and others in the Capitol." He argued at the time that each conclusion "compels me to support conviction."
Progressive groups have pointed to Cassidy's defeat as evidence of primary elections becoming increasingly dominated by loyalty tests tied to Trump endorsement. Some Democrats noted that while they often disagreed with Cassidy on policy, his willingness to vote based on constitutional principles distinguished him from most Republican colleagues.
What the Right Is Saying
Sen. Lindsey Graham (R-S.C.), a Trump ally, offered a starkly different assessment during an NBC "Meet the Press" appearance Sunday. "There's no room in this party to destroy his agenda or to destroy him and his family as a Republican," Graham said.
Graham argued that Cassidy aligned with Democrats on key votes that damaged Trump's legislative priorities. "If you align with Democrats to drive him out of office, like Cassidy did, you're going to lose," Graham stated. He added that the outcome demonstrated consequences for senators who voted to convict the former president.
Trump celebrated Cassidy's defeat on Truth Social Saturday, writing: "His disloyalty to the man who got him elected is now a part of a legend, and it's nice to see that his political career is OVER!" Trump had targeted Cassidy for years following the impeachment vote. The former president also criticized Cassidy for blocking his surgeon general nominee Casey Means, drawing condemnation from Health and Human Services Secretary Robert F. Kennedy Jr.
Trump-endorsed Rep. Julia Letlow (R-La.) and Louisiana Treasurer John Fleming advanced to a June 27 runoff after neither secured more than half the vote Saturday. Both candidates received Trump's backing against Cassidy.
What the Numbers Show
Cassidy first won his Senate seat in 2014 with 56 percent of the vote and was re-elected in 2020 with 58 percent, making him one of Louisiana's most consistently successful Republican candidates before Saturday's result. He served as chair of the Senate Health, Education, Labor and Pensions Committee since 2021.
Seven Republican senators voted to convict Trump at his first impeachment trial in February 2020. Following Saturday's results, only three of those seven remain in office: Sens. Mitt Romney, Lisa Murkowski (R-Alaska), and Pat Toomey (R-Pa.), who retired in 2023. The other four—Sens. Richard Burr (N.C.), Thom Tillis (N.C.), Ben Sasse (Neb.), and now Cassidy—either chose not to seek re-election or lost primaries.
Cassidy received Trump's opposition despite his conservative voting record on most issues, reflecting the weight of personal loyalty disputes over policy alignment in contemporary Republican primaries.
The Bottom Line
Cassidy's defeat illustrates how Trump retains decisive influence over Republican primary elections through endorsements and sustained political opposition. His loss marks a significant moment for institutional Republicans who have faced electoral consequences for their impeachment votes.
Neither Letlow nor Fleming reached the 50 percent threshold Saturday, setting up a runoff that will determine whether Trump's endorsed candidate or an alternative takes the seat. The outcome could affect Senate committee assignments and healthcare policy leadership in the next Congress. Cassidy thanked supporters Saturday evening with remarks emphasizing respect for democratic outcomes: "When you participate in democracy, sometimes it doesn't turn out the way you want it to, but you don't pout, you don't whine," he said.