Both sides cast the Election Day choice as one with far-reaching repercussions for a nation still recovering from the biggest economic downturn since the Great Depression and at odds over how big a role government should play in solving the country's problems.
"It's a choice between two different visions for America," Obama declared in Madison, Wis., on Monday asking voters to let him complete work on the economic turnaround that began in his first term. "It's a choice between returning to the top-down policies that crashed our economy, or a future that's built on providing opportunity to everybody and growing a strong middle class."
Romney argued that Obama had his chance and blew it.
"The president thinks more government is the answer," he said in Sanford, Fla. "No, Mr. President, more jobs, that's the answer for America."
With both sides keeping up the onslaught of political ads in battleground states right into Election Day, on one thing, at least, there was broad agreement: "I am ready for it to be over," said nurse Jennifer Walker in Columbus, Ohio.
It wasn't just the presidency at stake Tuesday: Every House seat, a third of the Senate and 11 governorships were on the line, along with state ballot proposals on topics ranging from gay marriage and casino gambling to repealing the death penalty and legalizing marijuana. Democrats were defending their majority in the Senate, and Republicans doing likewise in the House, raising the prospect of continued partisan wrangling in the years ahead no matter who might be president.
If past elections are any guide, a small but significant percentage of voters won't decide which presidential candidate they're voting for until Tuesday. Four percent of voters reported making up their minds on Election Day in 2008, and the figure was 5 percent four years earlier, according to exit polls. In Washington Lee High School in Arlington, Va., hundreds of voters were in line shortly after the polls opened at 6 a.m. and had to wait over an hour to cast their ballot.