President Barack Obama and Mitt Romney storm into the final day of their long presidential contest, mounting one last effort to protect their flanks while engaging in the toughest battleground of all -- Ohio.
The two campaigns were ready to leave matters in the hands of voters and their schedules left little doubt where the election would be won or lost. Obama was holding rallies in Wisconsin and Iowa on Monday. Romney was cutting a broader swath, with events in Florida, Virginia and New Hampshire.
But the richest prize is Ohio, and both Obama and Romney were rallying their supporters in its capital, Columbus.
Whoever wins Ohio has a simpler path to amass the 270 electoral votes needed to claim the presidency. With national polls showing the two candidates locked in a virtual tie, the outcome in a handful of key states will determine who occupies the White House for the next four years.
For Obama, Iowa, Wisconsin and Ohio are his firewall. "I think it's going to hold firm," Vice President Joe Biden told a rally in Ohio Sunday. Victories in those three states, barring a huge upset in a state like Pennsylvania, would virtually assure him re-election. "I think we're going to win clearly," Biden said.