Senator Bill Cassidy is facing renewed scrutiny in Louisiana’s Republican Senate primary after reportedly lashing out at party leadership over campaign funding, even as he sits on a sizable war chest.

According to reports, Cassidy expressed frustration with the National Republican Senatorial Committee, arguing the group had not done enough to support his reelection effort despite already producing ads and backing his campaign publicly. The dispute reportedly escalated during a phone call with NRSC leadership.

The tension highlights broader challenges for Cassidy as he seeks a third term while navigating backlash from Republican voters over his 2021 vote to convict Donald Trump during the president’s second impeachment trial. That vote has remained a central issue in the race, particularly in a closed GOP primary where only Republican voters will participate.

Cassidy is competing against Julia Letlow, who has secured Trump’s endorsement, and John Fleming, a former congressman and founding member of the House Freedom Caucus. Both challengers have gained traction among conservative voters.

Despite the political headwinds, Cassidy and allied groups began the year with roughly $26 million in available funds, and his campaign has spent heavily on advertising. Still, recent polling has shown a volatile race, with some surveys indicating Cassidy could struggle to secure a top-two finish needed to advance to a likely runoff.

Conflicting polling underscores the uncertainty. Some surveys show Letlow leading with Cassidy trailing behind both her and Fleming, while others, including one backed by Cassidy’s campaign, place the incumbent in the lead. Analysts note that a significant share of voters remains undecided, leaving the outcome fluid in the final weeks.

Republican leaders, including Tim Scott and John Thune, have offered support to Cassidy, though Trump’s endorsement of Letlow has reshaped the race’s dynamics.

Under Louisiana’s updated election system, if no candidate secures a majority on May 16, the top two finishers will advance to a June runoff. Given the state’s strong Republican lean, the eventual GOP nominee is widely expected to win the general election.

The contest has become a test of Cassidy’s standing within the party, as well as the influence of Trump’s endorsement in a competitive primary environment.