Primary polls open in Wisconsin

A four-way Republican race for the U.S. Senate is at the top of the ticket and is the only statewide contest. Two congressional districts and dozens of legislative races are also on the ballot.

Wisconsin GOP Senate race to be decided

Republicans hoping to win a Wisconsin Senate seat in Democratic hands for more than 50 years are deciding which of four candidates they want to move forward to the general election.

Wisconsin GOP Senate race enters final days

As the contentious Republican primary race for U.S. Senate enters its final days, the candidates and independent groups are blanketing the airwaves with millions of dollars in mostly negative ads as part of a final push to sway voters.