A couple of weeks of constant battering from her opponents has cost City Council Speaker Christine Quinn a few points in the latest mayoral poll — but she still leads her closest Democratic rival by 18 points.
The Quinnipiac University survey found Quinn favored by 32 percent of Democratic voters, down from 37 percent in the previous poll, which was released on Feb. 27.
To avoid a runoff, a mayoral candidate would have to collect at least 40 percent of the vote in the Sept. 10 primary.
Most of the voters lost by Quinn moved to the undecided column and not to her opponents.
Former city Comptroller Bill Thompson was the only one who gained ground — he went from 11 percent to 13.
Public Advocate Bill de Blasio held at 14 percent, the same as in February, and current city Comptroller John Liu dropped from 9 percent to 7 percent. Thirty percent were undecided.
“We’d be worried if they were picking up her voters, but they’re not,” said one Quinn ally.
In the Republican contest, former MTA Chairman Joe Lhota led with 23 percent, followed by Doe Fund founder George McDonald at 11 percent and businessman John Catsimatidis at 8 percent.
Fifty-two percent of GOP voters were undecided.
The poll of 1,417 registered voters was conducted April 3-8, days before former Rep. Anthony Weiner disclosed that he’s thinking of jumping into the race.
That was also a period during which Quinn was coming under fierce attack for proposing an outside inspector general for the NYPD and for supporting a bill mandating paid sick leave, a different version of which she had earlier opposed.