US presidential rivals Barack Obama and Mitt Romney are approaching the final day of their election battle in a frantic fight for swing state votes.
Obama is scheduled to appear in Madison, Wisconsin, accompanied by Bruce Springsteen, before going on to Iowa and Ohio.
Romney is due in Florida - where polls suggest he is ahead - in Virginia, New Hampshire and Ohio.
Analysts say the election will come down to a handful of swing states.
Obama and Romney are running almost neck-and-neck in national polls, but polls of many key battlegrounds show Obama narrowly ahead.
The campaign has been most intense in Ohio, which no Republican has ever lost and still made it to the White House.