Louisiana Senate runoff tests Trump’s endorsement strength as Letlow faces Fleming Saturday
Republican voters in Louisiana head to the polls Saturday to decide between Rep. Julia Letlow and state Treasurer John Fleming in a closely watched Senate runoff that serves as the latest measure of President Donald Trump’s influence over GOP nomination contests. The race follows Trump’s successful effort to oust Sen. Bill Cassidy, who voted to convict the president during his second impeachment trial five years ago. Cassidy finished third in the March primary, marking the first time an elected Republican senator lost renomination since 2012. The outcome will determine whether Trump’s endorsement streak continues or faces another setback after recent mixed results across the country.
Letlow secured Trump’s backing before officially entering the race in January and captured 45% of the vote in the initial primary. Fleming took approximately 28%, while Cassidy managed just under 25%. Since no candidate reached the 50% threshold required to win outright, the top two advanced to Saturday’s runoff. Trump celebrated Cassidy’s defeat on social media, declaring the senator’s political career “OVER!” in capital letters. Cassidy responded during his concession speech with a veiled criticism of Trump, stating that participants in democracy don’t “pout” or “whine” when results don’t favor them, nor do they “claim the election was stolen” or “manufacture some excuse.”
Competing conservative credentials in Republican contest
Julia Letlow won her congressional seat in 2021 under tragic circumstances after her husband, Luke Letlow, died six days after being sworn into the U.S. House following his 2020 election victory. She has prominently featured Trump’s endorsement throughout her Senate campaign and also carries the support of Louisiana Gov. Jeff Landry, a prominent Trump ally. Her campaign messaging emphasizes her loyalty to the president’s agenda and her record in Congress representing the same district her late husband won.
Fleming brings a different profile to the race, having served eight years in Congress before joining Trump’s first administration as deputy chief of staff. He argues he represents the most conservative option in the Republican field, attempting to position himself to the right of Letlow despite Trump’s endorsement of his opponent. Fleming’s experience in both legislative and executive branches forms the core of his appeal to voters seeking proven conservative leadership. The ideological differences between the candidates remain narrow, with both competing for the same base of Trump-supporting Republican voters.
Trump’s recent endorsement record shows mixed results
The president’s endorsement power has demonstrated significant force in recent GOP primaries, with Trump-backed candidates successfully ousting targeted incumbents in Indiana, Kentucky, Texas, and Louisiana over the past two months. However, the winning streak encountered obstacles in recent weeks. Three weeks ago in Iowa, Trump’s last-minute endorsement of Rep. Randy Feenstra in the gubernatorial race proved insufficient, as businessman Zach Lahn narrowly won with backing from MAHA movement supporters aligned with Health Secretary Robert F. Kennedy Jr. and Turning Point USA.
Trump rebounded in South Carolina three weeks ago when Lt. Gov. Pam Evette finished first in the GOP gubernatorial primary and Sen. Lindsey Graham won the Republican Senate primary outright, avoiding a runoff. Graham faced challenges from five candidates, including businessman Mark Lynch, who criticized the senator over his support for military action in Iran. Two weeks ago brought mixed results in Georgia and Alabama. In Alabama, Rep. Barry Moore, a House Freedom Caucus member with Trump’s endorsement, comfortably defeated former Navy SEAL sniper Jared Hudson in the GOP Senate runoff.
Georgia races deliver split decision for presidential picks
Georgia’s Republican Senate runoff demonstrated Trump’s continued influence when an 11th-hour endorsement helped Rep. Mike Collins defeat former college football coach Derek Dooley, who had Gov. Brian Kemp’s support. Collins, described as a MAGA champion, will face Democratic Sen. Jon Ossoff in November in a race considered crucial to determining whether Republicans maintain their slim Senate majority. The general election matchup represents one of a handful of contests that could shift control of the chamber.
The gubernatorial runoff in Georgia delivered a setback for Trump when billionaire businessman Rick Jackson defeated Lt. Gov. Burt Jones, despite Jones receiving endorsements from both Trump and Gov. Kemp over the final weekend. Jackson campaigned as an outsider and spent over US$ 100 million of personal wealth to boost his campaign, overwhelming the establishment-backed candidate. The loss highlighted the limits of endorsement power when facing self-funded opponents with unlimited resources for advertising and voter outreach.
Recent primary results show endorsement complexity
Tuesday’s upstate New York primary brought Trump another victory when first-time candidate Anthony Constantino, a businessman and former boxer, defeated Robert Smullen, a retired Marine Corps colonel and New York assemblyman backed by the state party. South Carolina’s Republican gubernatorial runoff presented a unique situation where Trump couldn’t lose, having endorsed both Lt. Gov. Pam Evette and state Attorney General Alan Wilson. Wilson won the contest in a landslide, ensuring Trump could claim credit regardless of the outcome.
- Letlow received 45% in the initial primary versus Fleming’s 28%
- Cassidy became the first Republican senator to lose renomination since 2012
- The GOP nominee enters November’s general election as the clear favorite
- Trump’s candidates have ousted multiple incumbents across recent primaries
General election implications for Senate control
The Republican nominee emerging from Saturday’s runoff will enter the November midterm election as the overwhelming favorite against either farmer Jamie Davis or Navy veteran Gary Crockett, who face each other in the Democratic Senate runoff. Louisiana’s solidly conservative voting patterns make the GOP nomination tantamount to winning the seat. The race forms part of the broader battle for Senate control, with Republicans defending their narrow majority against Democratic challenges in multiple battleground states.
Trump’s focus on filling Congress with loyal supporters during his final two years in office has made these primary contests particularly significant. A Letlow victory would reinforce the president’s ability to shape the legislative branch through strategic endorsements. A Fleming win, conversely, would mark the third high-profile endorsement failure this spring, potentially weakening Trump’s leverage in future primaries. Louisiana voters will deliver their verdict Saturday, adding another data point to the ongoing assessment of presidential influence over Republican nomination contests nationwide.








