U.S. Rep. Randy Feenstra leads trader consensus at 63% implied probability in the Iowa Republican gubernatorial primary due to his strong name recognition from four terms in Congress, early seven-figure ad buy emphasizing agriculture and business priorities, and positioning as the establishment frontrunner in the open race to replace term-limited Gov. Kim Reynolds. Adam Steen at 20% and Zach Lahn at 17% reflect grassroots conservative support, bolstered by endorsements like Bob Vander Plaats for Steen and Lahn's recent "Take Back Our Land Tour" addressing foreign ownership concerns, amid county straw polls and Iowa Standard surveys showing Feenstra trailing among the base. Eddie Andrews secured his ballot spot on March 25 after overcoming a signature challenge by one vote, while Brad Sherman lags. With the June 2 primary approaching, turnout among key voting blocs like rural conservatives could tip the balance.