Tom Tiffany secured the Republican nomination for Wisconsin governor in the August 11, 2026 primary with roughly 95 percent of the vote against minor challenger Andy Manske. Trader consensus at 100 percent reflects his early consolidation of support after receiving Donald Trump’s endorsement, which prompted several more established candidates to exit the race. As the sitting U.S. representative for the 7th district and a member of the House Freedom Caucus with prior service in the state legislature, Tiffany benefited from strong fundraising, extensive television advertising, and unified party backing in a low-turnout primary environment. The outcome aligns with historical patterns where an endorsed frontrunner faces limited opposition. A realistic challenge would require an unforeseen post-primary development, such as a successful legal contest over ballot eligibility or certification irregularities, though none have materialized in available reporting.