Faculty at three more University of Wisconsin System campuses want to vote to unionize.
UW-River Falls, Stevens Point and Stout filed petitions to hold elections, with union representation through AFT-Wisconsin.
UW-Superior and Eau Claire were the first campuses to unionize in spring 2010. UW-La Crosse filed for union election earlier this month.
According to AFT-Wisconsin, more than 70 percent of faculty on the three campuses signed cards asking the Wisconsin Employment Relations Commission to administer the elections.