Introduction
When a former president endorses your opponent, your political career can feel like it's hanging by a thread. That's exactly the situation U.S. Senator Bill Cassidy faced in Louisiana's 2026 Republican primary after President Donald Trump endorsed Representative Julia Letlow to unseat him. Cassidy's crime? Votiing to convict Trump during his second impeachment trial following the January 6, 2021 Capitol attack. He also clashed with Health Secretary Robert F. Kennedy Jr. over vaccine policy—despite providing crucial support for Kennedy's confirmation. This guide walks you through the strategic steps to survive such a primary challenge, based on real-world tactics and insider lessons from Cassidy's campaign.
What You Need
- Political capital – a track record of delivering for your state or district
- Strong local network – grassroots supporters, county chairs, and donors who trust you
- Clear messaging – ability to explain controversial votes without sounding defensive
- Media strategy – surrogates and paid ads to counter the endorsement narrative
- Opposition research – on your challenger's record and any inconsistencies
- Election-day operation – phone banks, door-knockers, and ride-share volunteers
- Thick skin – attacks will come from both the former president and his allies
Step-by-Step Guide
Step 1: Acknowledge the Elephant in the Room – Own Your Decision
Before you can move forward, you must publicly acknowledge why the former president is targeting you. In Cassidy's case, he voted to convict Trump on impeachment charges. Rather than hiding, issue a statement that explains your reasoning clearly—emphasizing constitutional duty, rule of law, or conscience. Do not apologize for it; voters respect conviction. Use local media to share your perspective. For example, Cassidy appeared on Louisiana talk radio to frame his vote as a matter of principle, not disloyalty.
Step 2: Rally Your Core Supporters Immediately
Your base is your lifeline. Within days of the endorsement against you, call your key donors, community leaders, and party activists. Hold small house parties or virtual town halls. Cassidy leveraged his medical background and relationships with Louisiana healthcare providers to shore up support. Remind them of the federal funding you secured, disaster relief after hurricanes, or local infrastructure projects. Personal connections beat a distant endorsement every time.
Step 3: Focus on State‑Specific Issues That Matter to Primary Voters
Even in a nationalized primary, local concerns dominate. In Louisiana, voters care about hurricane recovery, energy jobs, and healthcare. Cassidy highlighted his work on the Health, Education, Labor, and Pensions Committee to secure rural hospital funding. He also defended his nuanced stance on vaccines—pointing out that he supported Kennedy's confirmation but disagreed on policy. Show voters you're fighting for them, not against a former president.
Step 4: Counter the Endorsement Narrative with Your Own Record
An endorsement from a popular figure will dominate headlines, but you can redirect the story. Create a positive narrative around your accomplishments. Cassidy released a series of ads touting his role in passing the bipartisan infrastructure bill and his work on veterans' healthcare. Use earned media: op-eds, local news interviews, and social media posts that highlight your legislative wins. When the challenger attacks, pivot back to your record.
Step 5: Engage in Debates and Forums – Let Voters See Your Competence
Nothing undermines an endorsement like a strong debate performance. Agree to every debate and candidate forum. Cassidy prepared extensively on issues like energy independence, border security, and the economy. During debates, he avoided personal attacks on Trump or Letlow and instead contrasted his experience vs. her freshman status. He also used moments to explain his impeachment vote without being confrontational. Voters want a senator who can think on their feet.
Step 6: Leverage Unconventional Alliances – Even with Opponents
One of Cassidy's smartest moves was staying consistent on his support for Kennedy's confirmation, even while clashing with him later. This showed independence and a willingness to work across lines. If you have bipartisan achievements or relationships, publicize them. In a primary, being seen as a dealmaker can appeal to voters who value results over party loyalty. Coordinate with local business leaders or even former rivals to endorse you.
Step 7: Build a Strong Get‑Out‑the‑Vote Operation
Endorsements may sway undecided voters, but turnout wins primaries. Cassidy invested in a robust field program: phone banking, door‑to‑door canvassing, and digital targeting of likely supporters. Use voter data to identify low‑propensity voters who lean your way and make sure they get to the polls. Organize early voting events. Remember, in Louisiana's jungle primary, every vote counts—especially in low‑turnout Republican primaries.
Step 8: Prepare for Attacks and Stay on Message
The former president's endorsement will bring a flood of attack ads and social media hits. Have a rapid response team ready. Cassidy pre‑emptively addressed accusations of being a “RINO” by emphasizing his conservative voting record on taxes, gun rights, and life. Create a list of talking points for yourself and surrogates. Never get drawn into a back‑and‑forth with the president directly; instead, keep returning to your positive message. Consistency builds trust.
Tips for Navigating the Home Stretch
- Don't ignore the endorsement – address it head‑on early, then move on to policy.
- Use local media – state newspapers, radio shows, and community cable are more trusted than national outlets.
- Humanize yourself – share personal stories of why you serve, especially if you have a unique background like Cassidy's medical career.
- Stay civil – attacking the former president can backfire; instead, focus on your own merits.
- Plan for multiple scenarios – if the primary goes to a runoff (likely in Louisiana), save resources for the second round.
- Monitor your opponent's spending – if they got a big fundraising boost from the endorsement, adjust your ad buys accordingly.
- Finally, remember the ultimate goal – winning the primary, not settling scores. Keep your eye on the finish line.
Senator Cassidy's race is a case study in how to turn a presidential assault into a referendum on your own service. By following these steps, you can weather the storm and emerge stronger—ready to represent your constituents in Washington for years to come.