Details of the Tuesday visit are still being worked out. The former president’s visit is part of a Midwest swing that includes Minnesota, Iowa, Colorado, Ohio, Virginia, New Hampshire and Wisconsin, the Obama campaign said. All year, the six other states have been considered battleground areas in the presidential race.

Minnesota has not been on that swing state list but a Star Tribune Minnesota Poll, published Sunday, shows a newly tight race between Obama and Republican Mitt Romney. The poll found Obama with a 3 percentage point lead over Romney, an advantage that is within the poll’s margin of error of plus or minus 3.5 percentage points.