Updated at 1:02 p.m. ET on 8/14
(CNN) - Eliot Spitzer appears to be weathering a series of harsh attacks from his opponent and has expanded his lead in Democratic primary race for New York City Comptroller, according to a Quinnipiac poll released Wednesday.
Spitzer, the former New York attorney general and governor, leads his opponent, Manhattan borough president Scott Stringer, by a commanding 19 points – 56 to 37 – among Democratic primary voters.
That's a wider lead than the last Quinnipiac survey of the race one month ago, which showed Spitzer with a 15-point edge.
His advantage buttressed by a more than 3-1 lead among black voters and a nearly 20-point lead among women.
Crucially, Spitzer - who resigned the governorship in 2008 after a prostitution scandal - is also polling well above 50%, undercutting the Stringer campaign's argument that Spitzer lacks support from a majority of New Yorkers.
While a majority of Democrats said Spitzer's prostitution scandal is a "legitimate" issue in the comptroller's race, only 23% said it disqualifies from the job.
That number is even lower – just 13% - among black voters, who back Spitzer by an enormous 68-21 margin over Stringer.
Spitzer is simply a better-known figure and is benefiting from a fresh wave of television ads that portray him as an anti-Wall Street populist, said Maurice Carroll, director of the Quinnipiac poll.
"Spitzer is all over the TV screens, building on his better name recognition and leaving Manhattan Borough President Scott Stringer in the dust," Carroll said.
While Spitzer has been on the airwaves for weeks, Stringer unveiled his first television ad of the campaign on Wednesday, an introductory spot that highlights his plan to cut waste and help the middle class.
"Scott Stringer is running a campaign based on the needs of working people in this City. As more New Yorkers get to know him, we are confident he will support him, and his fight for the Middle Class," campaign spokeswoman Audrey Gelman said.
The New York primary is September 10.