Representative Julia Letlow emerged victorious in Louisiana’s Republican Senate runoff election on Saturday, defeating state Treasurer John Fleming with the strong backing of President Donald Trump. The Associated Press called the race in favor of Letlow, who now becomes the GOP nominee for the seat currently held by Senator Bill Cassidy. The outcome marks another significant win for Trump’s endorsement strategy as he seeks to reshape Congress with loyalists during his final two years in office.
Letlow’s triumph comes six weeks after Louisiana Republican voters denied Cassidy a third term in the Senate. The incumbent senator finished third in the initial primary, trailing both Letlow and Fleming. Since no candidate secured 50% of the vote in the first round, the top two contenders advanced to the runoff. Cassidy became the first sitting Republican senator to lose renomination since Indiana’s Richard Lugar in 2012.
Trump’s endorsement power shapes Louisiana race outcome
The president threw his support behind Letlow even before she officially entered the race in January. His early endorsement proved decisive, helping her finish first in the primary with a double-digit lead over Fleming. Trump celebrated Cassidy’s defeat on social media, declaring that “it’s nice to see that his political career is OVER!” The statement reflected the president’s ongoing feud with the senator, who voted to convict Trump during his second impeachment trial five years ago.
Fleming, who served eight years in Congress and worked as White House deputy chief of staff during Trump’s first term, positioned himself as the most conservative candidate in the field. Despite his previous proximity to the Trump administration and his conservative credentials, he could not overcome Letlow’s advantage with the presidential endorsement. Louisiana Governor Jeff Landry, a prominent Trump ally, also backed Letlow throughout the campaign.
Cassidy’s impeachment vote sealed political fate
In his concession speech, Cassidy took an indirect shot at Trump without naming him. “When you participate in democracy, sometimes it doesn’t turn out the way you want it to,” he told supporters. “But you don’t pout, you don’t whine. You don’t claim the election was stolen… You don’t manufacture some excuse.” The remarks appeared to reference Trump’s response to the 2020 presidential election.
Letlow won her congressional seat in 2021 under tragic circumstances. Her husband, Luke Letlow, died five days before being sworn into the U.S. House following his 2020 election victory. She successfully ran for the seat he had won and has represented the district since. Throughout her Senate campaign, she prominently featured her Trump endorsement in messaging and advertising.
Trump’s endorsement streak shows mixed results across states
The Louisiana result demonstrates the continued potency of presidential endorsements in Republican primaries. Over the past two months, Trump-backed candidates have ousted targeted incumbents in several states, including showdowns in Indiana, Kentucky, and Texas. The pattern suggests significant influence over GOP primary voters, particularly when Trump targets specific officeholders.
- Representative Barry Moore won Alabama’s GOP Senate runoff comfortably with Trump’s backing.
- Representative Mike Collins secured victory in Georgia’s Republican Senate runoff after an 11th-hour Trump endorsement.
- Lieutenant Governor Pam Evette finished first in South Carolina’s GOP gubernatorial primary with presidential support.
- Anthony Constantino defeated the New York state party’s preferred candidate in an upstate congressional race.
However, Trump’s endorsement record is not perfect. Three weeks ago, his last-minute backing of Representative Randy Feenstra in Iowa’s gubernatorial race failed to secure victory. Feenstra narrowly lost to Zach Lahn, a businessman and farmer supported by political organizations aligned with Health Secretary Robert F. Kennedy Jr.’s Make America Healthy Again movement and Turning Point USA. The defeat represented the first break in Trump’s endorsement winning streak in statewide and congressional Republican primaries during this cycle.
General election outlook favors Republican nominee
Letlow enters the midterm election as the clear favorite against the Democratic nominee, who will be determined in a runoff between farmer Jamie Davis and Navy veteran Gary Crockett. Louisiana remains a solidly Republican state in federal elections, giving the GOP nominee a substantial structural advantage. The contest is unlikely to factor into the balance of power calculations in the Senate, where Republicans currently hold a slim majority.
In Georgia, Trump-backed candidates achieved mixed results. While Representative Mike Collins won the Republican Senate runoff, Lieutenant Governor Burt Jones lost the GOP gubernatorial runoff to billionaire businessman Rick Jackson, who ran as an outsider and spent over $100 million of his own money on the campaign. Collins will face Democratic Senator Jon Ossoff in November in what could be one of the races determining Senate control. Senator Lindsey Graham, a longtime Trump ally, secured more than 50% in South Carolina’s Republican Senate primary, avoiding a runoff despite facing five challengers.
