Nate Silver: Undecided Voters Make Clinton's Position Worse Than Obama's

A larger batch of undecided and third-party voters makes Hillary Clinton's position heading into the election worse than President Barack Obama's four years ago, according to Nate Silver of FiveThirtyEight.com.

Silver gives Clinton a 65-percent chance of winning, compared to 91 percent for Obama in 2012, despite the fact Clinton is farther ahead in the polls — albeit narrowly — now than Obama's predicted edge.

Silver says the amount of undecided voters could make for a last-minute swing that could put Clinton firewall states, like New Hampshire, in jeopardy.

New Hampshire is significant in that the race there has tightened, and it could be a bellweather for Trump's comeback and chances of winning other close battleground states — Nevada, Florida and North Carolina.

"Clinton's so-called firewall is not very robust," Silver wrote. "If you're only ahead in exactly enough states to win the Electoral College, and you'd lose if any one of them gets away, that's less of a firewall and more of a rusting, chain-link fence."

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