Biden said Romney should consider a run for the upper chamber during a closed-door appearance with the 2012 GOP presidential nominee in Deer Valley, Utah, Politico reported

The audience at the annual donor conference hosted by Romney applauded in response, sources to the newspaper, though Romney simply smiled.

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According to Politico, Biden told attendees in Utah that he knew Clinton would lose key battleground states in October, a month before the election, based on his past campaigning in those states.