WASHINGTON (BLOOMBERG) - Joe Biden responded to a former Nevada lawmaker who's gone public about a incident in which she says the then-vice-president acted inappropriately towards her, as a new poll showed the 76-year-old is the most palatable candidate for Democratic voters in 2020.
Ms Lucy Flores, a former Nevada assembly member, said Mr Biden smelled her hair and delivered "a slow kiss" to the top of her head at a 2014 campaign event when she was running for state lieutenant governor.
"I just can't imagine that there was never a situation where someone said to him... you probably should stop doing that, you should probably stop touching women in that way," Ms Flores, 39, said Sunday on CNN's State Of The Union.
In a statement released on Sunday (March 31), Mr Biden said he had "offered countless handshakes, hugs, expressions of affection, support and comfort" during his years in public life.
"Not once - never - did I believe I acted inappropriately," he said in the statement. "If it is suggested I did so, I will listen respectfully. But it was never my intention."
Mr Biden said he would "remain the strongest advocate I can be for the rights of women. I will fight to build on the work I've done in my career to end violence against women and ensure women are treated with the equality they deserve".
Ms Cynthia Hogan, a former staff member for Mr Biden in the Senate and as Vice-President, said in a statement that Mr Biden looked out for women and "treated us with respect and insisted that others do the same".
Ms Flores's allegation put many Democrats in a bind regarding an elder statesman in their party and potential 2020 White House candidate.
"All of us should take such allegations seriously and with respect. I took Joe Biden's statement to say just that exactly," Senator Dick Durbin of Illinois said on NBC's Meet The Press.
"Certainly one allegation is not disqualifying, but it should be taken seriously."
Senator Amy Klobuchar of Minnesota, who's running for the 2020 nomination, said on ABC's This Week that she has "no reason not to believe" Ms Flores and that Mr Biden "will continue to address it if he decides to get into this race."
And Senator Bernie Sanders of Vermont, another 2020 contender, also said he has "no reason not to believe Lucy" in an interview on CBS's Face The Nation.
Asked if the allegation was "disqualifying" to Mr Biden, Mr Sanders said "I think that's a decision for the Vice-President to make" and "I'm not sure that one incident alone disqualifies anybody".
Ms Flores has served in the past on the board of directors of Our Revolution, a political action organisation spun out of the 2016 Sanders campaign for the Democratic nomination.
Separately, an NBC-Wall Street Journal poll released on Sunday showed Mr Biden, who's yet to formally announce a presidential bid, is the most palatable among well-known Democratic candidates at the moment.
A combined 73 per cent of Democrats say they are either enthusiastic or comfortable with Mr Biden as a candidate, while just 25 per cent either have reservations or are uncomfortable.
That put Mr Biden ahead of candidates with more progressive policy proposals, including Mr Sanders and Senator Elizabeth Warren of Massachusetts.
The survey was conducted on March 23 to 27, before Ms Flores' comments came to light last Friday in an article for The Cut.
The margin of error for 1,000 adults surveyed was plus or minus 3.1 per cent.