US presidential election rivals Barack Obama and Mitt Romney are set to enter into the final day of the election battle as the opinion polls show the challengers are still neck-and-neck on the eve of the vote

US presidential election rivals Barack Obama and Mitt Romney are set to enter into the final day of the election battle as the opinion polls show the challengers are still neck-and-neck on the eve of the vote.

According to an opinion poll by the Wall Street Journal and the NBC News, 48 percent of voters would likely support Obama and 47 percent would vote for Republican candidate Romney.

“This poll is reflecting a very, very close campaign nationally,” said Republican pollster Bill McInturff on Sunday.

Democratic pollster Peter Hart also described the latest opinion poll, which was conducted between November 1 and November 3, as “a dead heat."

“This election is going to be decided by turnout, turnout, turnout,” he said.

Another survey released on Sunday by Ohio’s Columbus Dispatch also gave Obama a two-percent lead against Romney (50 percent to 48 percent).

Meanwhile, the latest ABC News/Washington Post survey put Obama and Romney at 48 percent support among likely voters.

Most polls, however, show Obama is slightly ahead of his Republican rival.

“Ultimately, it’s up to you. You have the power,” Obama told a crowd of people in Concord, New Hampshire on Sunday.

“You will be shaping the decisions for this country for decades to come right now, in the next two days.”

The US presidential election will be held on November 6.