Former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE in a new interview would not discuss the possibility of running for a second term in the White House if he is elected in 2020.

The Associated Press asked the Democratic candidate if he would promise to serve only one term. Biden responded by saying he would not make that vow.

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“I feel good and all I can say is, watch me, you’ll see,” Biden said. “It doesn’t mean I would run a second term. I’m not going to make that judgment at this moment.”

Biden, 76, also said it's "legitimate" to ask about his age.

“Right now it’s a legitimate question to ask, just like it was legitimate to ask me when I was 29 years old running for the Senate, did I have enough judgment to be a senator,” Biden told the AP. “Right now, my age has brought with it a significant amount of experience in government and hopefully wisdom and some sound judgment.”



Biden is the second-oldest candidate in the Democratic field, behind Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.), who is 78. Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.), another Democratic frontrunner, is 70 years old. President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE, 73, is running for his second term.

Biden would be 81 at the start a second presidential term, while Sanders, who recently suffered a heart attack, would be 82.

Biden leads Warren by roughly 5 points in the RealClearPolitics average of recent national polling.