Jim Messina, the campaign manager of President Obama's reelection effort in 2012, flatly denied that "anyone who mattered" considered dropping Vice President Biden to add Secretary of State Hillary ClintonHillary Diane Rodham ClintonTrump's economic approval takes hit in battleground states: poll This is how Democrats will ensure Trump's re-election The Hill's Morning Report - Trump takes 2020 roadshow to New Mexico MORE to the ticket.

 

 

Messina's denial came after journalists Mark Halperin and John Heilemann reported in their new book Double Down that then-White House chief of staff Bill Daley, spooked by the president’s drooping poll numbers in the fall of 2011, ordered campaign staffers to poll and focus-group the impact of switching the two.

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Earlier Friday, White House press secretary Jay Carney said he didn't know if President Obama was aware of Daley's efforts, but that the idea was never seriously considered.

"The president never considered that, and had anyone brought that idea to him, he would have laughed it out of the room," Carney said.

Carney, who previously worked as a spokesman for Biden, also offered a defense of the vice president.

"If you look back at 2012, and you look at that moment in the campaign when the vice president had his debate, it was a key moment, and Joe BidenJoe BidenThe Hill's 12:30 Report: NY Times story sparks new firestorm over Kavanaugh Top Sanders adviser: 'He is a little bit angry' Working Families Party endorses Warren after backing Sanders in 2016 MORE delivered for the ticket," Carney said. "I think there's no question about that, and the president knew he would."