Obama and McCain focus on key states

Washington: With one day remaining in the hard-fought presidential contest, Republican John McCain set out on Sunday on a dizzying campaign charge through three states where victory could yet tip the presidential contest in his favour.

Front-running Democrat Barack Obama looked to battleground Ohio to clinch the race.

McCain's scrappy closing scramble resounds with his promise of a come-from-behind victory against Obama.

A victory for the four-term Arizona senator would mark a true upset given Obama's solid lead in most national and key state polls.

As Obama focused on Ohio's three major cities, including an appearance in Cleveland with singer Bruce Springsteen, McCain was dashing from Pennsylvania to New Hampshire and then to Florida for a late night rally.