Randy Feenstra holds an 85.5% implied probability in the Iowa Republican gubernatorial primary due to his established profile as a U.S. representative and state senator, combined with President Trump's endorsement issued days before the June 2 vote. Recent attack ads between Feenstra and challenger Zach Lahn have highlighted policy contrasts on taxes, immigration, and business issues, yet trader consensus favors Feenstra's path through the primary. A late-May poll showed Lahn narrowly ahead at 24% to 22%, but Feenstra's name recognition and national Republican backing appear to outweigh that snapshot among bettors. The remaining candidates—Zach Lahn at 15.2% and the others near zero—face structural barriers from limited statewide visibility and resources ahead of the closely watched contest.