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Thomas Tiffany

Image for Alfonso carries GOP primary in Wisconsin’s 7th CD • Wisconsin Examiner

Alfonso carries GOP primary in Wisconsin’s 7th CD • Wisconsin Examiner

Wisconsin Examiner · August 12, 2026

President Donald Trump endorsed Michael Alfonso, the son-in-law of Department of Transportation Sec. Sean Duffy, in the Republican primary for Wisconsin’s 7th Congressional District Tuesday evening. (Alfonso headshot courtesy of campaign)

The battle to compete for U.S. Rep. Tom Tiffany’s open seat in Wisconsin’s 7th Congressional District ended Tuesday night in victory by Michael Alfonso, son-in-law of Transportation Secretary Sean Duffy, who previously held the 7th CD seat. Alfonso was endorsed by President Donald Trump.

The AP called the race at 9:16 p.m. with 59% of the vote counted.

Alfonso will compete in the Republican-leaning district to replace Tiffany, a strong Trump ally, who announced his retirement from Congress when he launched his campaign for governor.

Alfonso entered the race in Oct. 2025, saying that “Northern Wisconsin needs to continue to have a representative who will truly put our families, communities, and America first.” He gained Trump’s endorsement in January.