A Republican congressman from northern Wisconsin says he won't challenge Democratic U.S. Sen. Tammy Baldwin for her seat.
Congressman Sean Duffy of the seventh district announced his decision today.
That's leading others to consider a run. State Senator Leah Vukmir (VOOK-meer) of Wauwatosa, and former Marine and former Democrat Kevin Nicholson says they might get in the race.
Baldwin is up for re-election in the fall of 2018.