(NBC News) A defiant Anthony Weiner says he won't give up his campaign to be New York's next mayor.
A week after being in first place among Democrats in the race, Weiner has tumbled to fourth place in the most recent poll from Quinnipiac University.
That poll also comes a week after Weiner admitted exchanging sexually explicit messages online after similar behavior spurred his resignation from Congress in 2011.
His determination stay in grew Tuesday night in a testy exchange with a skeptical voter.
"I don't quit, New Yorkers don't quit. I'm not going to go in the corner and curl up because someone found out something embarrassing about me," Weiner said.
-- Chris Clackum, NBC News, reports