New revelations about explicit messages sent by New York City mayoral candidate Anthony Weiner have sent the former congressman's poll numbers into a free-fall, according to a new poll by The Wall Street Journal and NBC News.

City Council Speaker Christine Quinn now leads the Democratic primary with 25 percent support, compared to 16 percent who back Weiner, according to the survey. Public Advocate Bill de Blasio, at 14 percent, rounds out the top three, and the two points separating him and Weiner is within the margin of error.

The new poll marks a 14-percentage point swing in Quinn's favor from a survey taken late last month, which showed Weiner leading the race.

Thursday's poll is the first since Weiner admitted on Tuesday that he continued to send sexually explicit texts and photographs to young women, well after the same revelations forced him to resign his House seat in 2011.

Weiner sent the lewd messages, as recently as last summer to a 23-year-old Indiana woman. The former lawmaker used the online name "Carlos Danger," earning him ridicule online and in the New York tabloids.

Weiner's decline was driven by an uptick in his unfavorability rating — now at 55 percent. In June, just 36 percent of New York Democrats viewed the former Brooklyn congressman unfavorably. Some 43 percent of potential primary voters say Weiner should exit the race, and 45 percent said he did not have the moral character to be mayor.

Still, the poll showed 47 percent of voters saying that Weiner deserved another chance, and an equal number saying he should continue to run.

The poll had a margin of error of plus or minus 4.2 percentage points, and interviewed 1,199 New York City residents.