House Speaker Paul Ryan is looking at challenges from two Dems, a "Trump Conservative," a Libertarian and an Independent this fall.
Meanwhile, fellow Republican Paul Nehlen, who has attracted the most attention of Ryan's possible rivals, faces a 5 p.m. deadline to turn in enough signatures to qualify for the ballot.
Nehlen was not listed among the candidates who have registered to run for the 1st CD. In addition to Ryan, R-Janesville, two candidates have turned in their nomination papers: Ryan Solen, a Mt. Pleasant Dem, and Spencer Zimmerman of Janesville, who lists his party as "Trump Conservative."
Dem Tom Breu of Janesville, Libertarian Jason Lebeck of Janesville and independent John Eleniewski have filed their campaign registration statement, declaration of candidacy and economic interest statement, according to the GAB. All need to turn in at least 1,000 valid signatures from the district to qualify for the ballot.
In other House races:
2nd CD: Dem Rep. Mark Pocan, of the Town of Vermont, has turned in his nomination papers. Republican Peter Theron, who lost bids for the seat in 2008, 2010, and 2014 has registered to run.
3rd CD: U.S. Rep. Ron Kind, D-La Crosse, has turned in his signatures. Dem Myron Bucholz had not turned in his by the close of business yesterday.
4th CD: Dem Rep. Gwen Moore, of Milwaukee, Libertarian Andy Craig and independent Robert Raymond have all turned in their signatures. Republican Weldon Carnahan of Milwaukee and Dem Tony Lee of Green Bay have filed other forms, but had not turned in their nomination papers, according to the GAB's latest update.
5th CD: Rep. Jim Sensenbrenner, R-Menomonee Falls, Dem Khary Penebaker and Libertarian John Arndt turned in their nomination papers yesterday.
6th CD: Two Dems have filed their nomination papers to challenge freshman U.S. Rep. Glenn Grothman, R-Glenbeulah, who also has filed his. They are Sarah Lloyd of Wisconsin Dells and Michael Slattery of Maribel.
7th CD: Rep. Sean Duffy, R-Weston, is one of four candidates to turn in nomination papers so far. The others are Dems Mary Hoeft, of Rice Lake, and Joel Lewis, of Wausau, and Libertarian Robert Burke, of Hudson, while three others have registered to run.
8th CD: Four candidates have turned in their nomination papers for the seat being vacated by U.S. Rep. Reid Ribble, R-Sherwood. They are Dem Tom Nelson, of Appleton, and Republicans Mike Gallagher, of Green Bay; Frank Lasee, of De Pere; and Terry McNulty, of Forestville. Four others have registered to run.