Declared and potential candidates are already in New Hampshire. Former Florida Gov. Jeb Bush and others spoke at the First in the Nation Republican Leadership Summit this week in Nashua. Darren McCollester/Getty Images hide caption

toggle caption Darren McCollester/Getty Images

Broward County canvassing board member Judge Robert Rosenberg examines a disputed ballot Nov. 24, 2000, in Fort Lauderdale, Fla. Wilfredo Lee/AP hide caption

toggle caption Wilfredo Lee/AP

Early voting has begun in the battleground states of Ohio, Virginia and Iowa. Voting booths were set up for early voting Thursday at the Black Hawk County Courthouse in Waterloo, Iowa. Ahead of Wednesday's first presidential debate, an NPR poll finds President Obama with a 7-point lead nationally, but his GOP challenger, Mitt Romney, is within striking distance. Scott Olson/Getty Images hide caption

toggle caption Scott Olson/Getty Images

For Romney to win the election, he is going to have to pick off some big states from Obama's 2008 tally. AP hide caption

toggle caption AP

NPR thanks our sponsors

Become an NPR sponsor