US Senator Cassidy’s vote to convict Trump looms over Louisiana primary

A Republican senator who broke from his party to vote in favour of convicting US President Donald Trump in impeachment proceedings during his first term is facing a bruising primary challenge in his home state of Louisiana.

Bill Cassidy’s primary race on Thursday has been seen as a barometer of Trump’s continued hold over the Republican Party. Even as polls have shown the president’s approval tanking, early primary votes have shown the continued weight his endorsement carries.

Trump has backed US Representative Julia Letlow in the Senate race. State Treasurer John Fleming is also running. The winner of the Republican primary is all-but-assured to win in the general election in the deep-red state.

Cassidy had joined seven Republicans in the Senate in voting to convict Trump of “incitement of insurrection”, following his campaign to overturn the 2020 election results and his supporters’ storming of the US Capitol on January 6, 2021.

“Our Constitution and our country is more important than any one person. I voted to convict President Trump because he is guilty,” Cassidy said in a statement at the time.

Despite the handful of Republican defections, the chamber fell far short of the two-thirds majority needed to convict Trump of the charges, of which he was acquitted.

Initially viewed as politically toxic after leaving office in 2021, Trump mounted a stunning comeback in the years that followed, reshaping the Republican Party in his likeness.

That included the ascension of many lawmakers who endorsed Trump’s claims that the 2020 vote was stolen, for which he has provided no evidence.

Currently, most other Republican senators who voted to convict Trump alongside Cassidy have been ousted or chosen to leave office.

Among the group, only Republican centrists Susan Collins from Maine, who continues to be seen as a bulwark against Democratic challengers in her home state, and Lisa Murkowski from Alaska, who saw off a Trump-backed challenger in 2022, have escaped major intra-party fallout for their votes.

Letlow, an academic administrator who entered office in 2021, has also seized on Cassidy’s 2021 vote, saying in her campaign launch video that residents of Louisiana “shouldn’t have to wonder how our senator will vote when the pressure is on”.

A fine line

Cassidy, a physician, has walked a fine line during Trump’s second term, regularly touting the administration’s policy initiatives and appearing alongside Trump at the White House several times for healthcare-focused events and bill signings.

Still, Cassidy has had some high-profile clashes with the Trump administration. During ‘s confirmation hearing to become health and human services secretary, Cassidy sparred with Kennedy over his vaccine scepticism.