McCain may be closing the gap, a new CNN poll of polls shows. (Getty Images)
(CNN) - With five days until Election Day, there are signs the presidential race may be tightening, according to a new CNN poll of polls.
According to an average of several recent surveys, Barack Obama's lead over John McCain is down to 5 points nationwide, 49-44 percent - a gap that is 3 points less than it was earlier this week, and nearly half what the margin was one week ago.
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The closing of polls late in a presidential race is not unusual: Sen. John Kerry lost his 2004 White House bid despite holding a slim lead over President Bush in its final days and then-Vice President Al Gore trailed Bush by 5 points in early November before the two essentially split the vote days later.
“It’s possible that McCain will continue to close the gap over the final few days of the campaign,” said CNN Senior Political Researcher Alan Silverleib. “Presidential elections often tighten up at the end, especially if there’s not an incumbent on the ballot. Voters sometimes experience a degree of ‘buyer’s remorse’ before settling on a new president."
Historically, however, only one presidential candidate in modern history has come back from the deficit McCain faces to win an election - Ronald Reagan in 1980.