Nate Silver: Risk of Polling Error Much Higher Than Usual

“Undecideds are MUCH higher than normal,” Nate Silver, of Five Thirty Eight said in a Tuesday morning tweet. “So risk of a polling error — in either direction — is higher than usual.”

One out of eight voters, or 12.5 percent, are either undecided or declaring support for other candidates during the last few days of the election. That is up from one out of 32 voters in 2012, one out of 27 voters in 2004 and one out of 10 voters in 2000, when Texas Gov. George W. Bush barely beat Vice-President Al Gore.