The ten registered voters of Dixville Notch, New Hampshire, were the first in America to cast their ballots on election day.
Throughout today at least 120 million Americans are expected to vote on giving Preisdent Barack Obama a second term or replacing him with Republican candidate Mitt Romney.
Their decision will set the country's course for four years on spending, taxes, healthcare and foreign policy challenges like the rise of China and Iran's nuclear ambitions.
National opinion polls show Obama and Romney in a virtual dead heat, although the Democratic incumbent has a slight advantage in several vital swing states - most notably Ohio - that could give him the 270 electoral votes he needs to win.
New York Times political statistician Nate Silver said polling on the final day before the election looked increasingly promising for Obama:
There's been a pretty clear shift toward Obama in national polls. Based on most recent data, he may lead by 2-3% in popular vote.
Obama gained an average of 1.5 points between 12 national polls published today. Big sample sizes. That's a pretty big deal.
An emotional Obama ended his final campaign in Iowa, the place that launched his first White House bid and that could hold the key to his political future.
After two days of nearly round-the-clock travel to the battleground states of Ohio, Florida, Colorado, New Hampshire and Wisconsin, Obama ended his tour in Des Moines with a speech that harked back to his 2008 campaign.
"I've come back to Iowa one more time to ask for your vote. I came back to ask you to help us finish what we've started, because this is where our movement for change began," he told a crowd of some 20,000 people.
Obama's voice broke and he wiped away tears from his eyes as he reflected on those who had helped his campaign:
Mitt Romney's final rally before the polls opened was in Manchester, New Hampshire.
"On November 6th, we come together for a better future. On November 7th we get to work," he told the crowd.
"I need your vote. I need your help. Walk with me. Tomorrow we begin a new tomorrow," he fninshed.