Wisconsin governor Scott Walker says Republican candidates need to campaign on the economy. Walker made a stop Thursday evening at Republican Party headquarters touting a record low unemployment rate. “We got a great story to tell,” Walker told supporters. “I think voters want to vote for something, not against something. Opponents talk about what they’re against, we’re going to talk about what we’re for.” Walker says this will be his most difficult re-election bid, even more difficult than the 2012 recall election.