Michael Alfonso defeated Jessi Ebben, Kevin Hermening, Donald Raihala, and Niina Threlfall-Baum in the Republican primary for Wisconsin's 7th Congressional District on Aug. 11. Alfonso, Ebben, Hermening, and Threlfall-Baum led in media attention. Incumbent Tom Tiffany (R) ran for governor of Wisconsin.
Alfonso, Ebben, and Hermening campaigned as self-described America First Republicans, a term associated with President Donald Trump (R) and his political agenda. Threlfall-Baum said she ran as a moderate Republican.
Alfonso is the son-in-law of U.S. Secretary of Transportation Sean Duffy, who represented the 7th District from 2011 to 2019. Trump endorsed Alfonso on Jan. 27, 2026.