UPDATED Wednesday, July 18, 2012 --- 8:00 a.m.
MILWAUKEE (AP) -- Wisconsin's GOP primary for the U.S. Senate is four weeks away, and all four Republican candidates are campaigning in earnest.
The four are all scheduled to attend a forum in Milwaukee on Wednesday. The candidates will appear separately and will have 30 minutes apiece for speeches and a question-and-answer session.
The forum is sponsored by the Citizens for Responsible Government Network, which works to elect conservative candidates. Group spokesman Orville Seymer says all four candidates have confirmed their attendance.
The four Republicans are hedge-fund manager Eric Hovde, former Wisconsin Gov. Tommy Thompson, state Assembly Speaker Jeff Fitzgerald and former U.S. Rep. Mark Neumann.
They'll square off in a primary on August 14. The winner advances to take on Democratic U.S. Rep. Tammy Baldwin in November.
Copyright 2012. The Associated Press.