Tom Tiffany holds a commanding position in the Republican primary for Wisconsin governor, driven by President Trump's January endorsement that prompted leading challenger Josh Schoemann to withdraw, alongside strong fundraising and unified backing from the state's congressional delegation. Recent support from former Governor Tommy Thompson in early May has further consolidated party support ahead of the August 11 primary. Polling shows Tiffany far ahead of remaining opponents such as Andy Manske, with many Republican voters still undecided. Traders assign high probability to Tiffany prevailing, though late developments like shifts in turnout among conservative voters or unexpected endorsements could narrow the margin before ballots are cast.