President Obama is hitting Wisconsin hard in the next few days, including a planned Saturday concert Katy Perry and there's talk about a Bruce Springsteen appearance with Obama on Monday in Madison.
Springsteen famously held a concert in downtown Madison for John Kerry in 2004, drawing tens of thousands of people.
A recent Rasmussen poll showed the state's 10 electoral votes still a toss-up at 49 percent for each candidate.
Bill Clinton has been through the state this week as well as Joe Biden.
Mitt Romney, meanwhile, is planning a Friday visit and Paul Ryan has had a more consistent presence in his home state.