...Which presidential election in American history most resembles the coming election between President Obama and Mitt Romney — and why?

1936: Franklin Delano Roosevelt vs. Alf Landon, says Alison Dagnes, who teaches political science at Shippensburg University. "The Republicans tried to attack FDR for his New Deal programs, saying they were too expensive and moved the country toward socialism — sound familiar?"...

1980: Jimmy Carter vs. Ronald Reagan, says Andrew Smith, director of the University of New Hampshire Survey Center. He cites the similarities: "Young, unknown president is elected after an unpopular administration — Nixon/Ford, Bush — economy in the doldrums, problems with Iran, sense of malaise."...

2004: George W. Bush vs. John Kerry. "Definitely 2004," says Alan Abramowitz, a political science professor at Emory University. "This year, just as in 2004, you have an incumbent president running for re-election in a polarized and closely divided electorate."...