A gunman suspected of fatally shooting a retired county judge at a Wisconsin home had a list that included Michigan Gov. Gretchen Whitmer, Senate Minority Leader Mitch McConnell and Wisconsin Gov. Tony Evers, Whitmer's office and a law enforcement source said Saturday.

Douglas K. Uhde, 56, who has not been charged, is suspected of killing retired Juneau County Judge John Roemer at Roemer's house in New Lisbon on Friday, the Wisconsin Department of Justice said in a news release Saturday.

Uhde was found in the basement of the home with a self-inflicted gunshot wound, following attempts by polic...