President Barack Obama won New Hampshire's four electoral votes on Tuesday, defeating Republican Mitt Romney.

CBS News called New Hampshire for Obama around 9:30 p.m. Soon after, CNN called New Hampshire for Obama too, eliciting cheers and tears from supporters at the campaign's election night party at the Radisson in Manchester.

Obama campaign volunteer Jonny Glyn led the crowd in song, singing, "There's only one Barack Obama... Walking in Obama wonderland."

With 64 percent of precincts reporting, WMUR reports that Obama is up 53 percent to 46 percent. NBC News called the presidential race for Obama around 11:15 a.m.

In the 2008 presidential election, New Hampshire also voted Democratic, with 384,591 voters casting ballots for the Obama-Biden team. Republicans John McCain and Sarah Palin earned nearly 316,937 votes. Since the 1990s, New Hampshire has voted for the overall winner of the presidential race four out of five times.

Fred Hurwitz, Bedford team leader for the Obama campaign, said he felt confident about the president's chances based on Tuesday's high turnout.

"We saw a lot of energy from people," he said.

Even in Republican-heavy Bedford, Hurwitz said, "The people who were supporting Romney didn't seem enthusiastic. From their perspective, it was 'Well, it's not Obama.'"

"I'm very excited," said Obama volunteer Monique Marihugh of Manchester. "All the work was worth it."

Marihugh said she had been telling people the race wouldn't be as close as they thought in New Hampshire.

"Tonight, I'm going to be proven right," she said.

Albert Moore came up from Boston to campaign for Obama. Even he was caught off guard by Obama's margin of victory in the Granite State.

"I am absolutely surprised," he said. "I knew New Hampshire was going to be a tough fight. Never did I think he was going to pull it off by that much."

He credited the victory to Obama's strong ground game, and the fact that many people never seemed to warm up to Romney.

Romney and Obama both campaigned aggressively in New Hampshire, with Romney visiting the Granite State on Saturday and Monday, and Obama making a campaign stop with former President Bill Clinton on Sunday. New Hampshire was considered a key swing state in this year's presidential election.

The economy was a key issue for many voters in the state, despite the fact that unemployment is lower here than in some other parts of the country.

Jennifer Horn, the 2008 Republican nominee for U.S. Congress in New Hampshire's 2nd district, said that she was genuinely surprised with the result.

While sitting at the New Hampshire Romney rally at Jillian's Billiards in Manchester, Horn said that Romney needs to perform "extremely well" in the remaining battleground states to win the election.

"I can tell you (the election) is definitely a roller-coaster," she said. "My heart is doing a mile a minute.

Horn said she is still optimistic that the outcome of the election will swing toward Romney.

Patsy Petit stood alongside a group of disheartened Romney supporters, saying that she no longer has confidence in the country anymore.

"They shoot themselves in the foot," she said of the American people.