[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/images/10/22/art.bloomberg.gi.jpg caption="A new poll suggests that Michael Bloomberg holds a 16-point lead over his Democratic rival."]
(CNN) - With less than two weeks until election day, a new poll suggests that Michael Bloomberg holds a 16-point lead over his Democratic rival as the New York City mayor bids for a third term in office.
According to a Marist College survey released Thursday, 52 percent of likely New York City voters support Bloomberg, running as an independent, with 36 percent backing Democratic New York City Comptroller William Thompson, and 12 percent supporting other candidates, or undecided.
That 16-point lead for Bloomberg is up from a 9-point advantage in a Marist poll conducted in September. Bloomberg also held a 16-point lead in a Quinnipiac University survey conducted in late September.
The Marist poll suggests that Bloomberg is leading among Democrats, 47 percent to 49 percent. That's a switch from last month, when Thompson held a slight majority of Democrats likely to vote in the November election. The poll also indicates Bloomberg taking the Republican vote, but Thompson ahead 48 percent to 41 percent among independents.
According to the survey, nearly seven in 10 white voters say they back Bloomberg, with more than six in 10 African-Americans supporting Thompson, with Bloomberg leading among Latino voters 42 percent to 35 percent.
Bloomberg's poll numbers took a minor hit late last year after he persuaded New York's city council to overturn term limits that would have prevented the mayor from running for a third term this year. The Marist survey indicates that nearly half of those polled say Bloomberg's decision to change the term limits law makes no difference in the way they vote, with just over four in 10 saying the move makes them less likely to support Bloomberg.
According to the poll, Bloomberg's approval rating remains strong, with 58 percent of those questioned saying they approve of how he's doing as mayor.
The Marist College poll was conducted October 19-21, with 390 likely New York City voters questioned by telephone. The survey's sampling error is plus or minus 5 percentage points.
Follow Paul Steinhauser on Twitter: @psteinhausercnn