"Who should move into City Hall when Mayor Bloomberg moves out?" asks Quinnipiac University Polling Institute Director Mickey Carroll. "Quinn tops the list of usual suspects and has an impressive job approval." Meanwhile, despite the indictment of his citywide campaign treasurer last month, Liu is holding his own. Forty percent of voters approve of the job he is doing as comptroller, equal to his approval rating last month, prior to the indictment. The percentage of voters who disapprove of the job he is doing has risen over the last month, from 29 percent to 37 percent, but that is roughly equal to the percentage who disapproved in December (35 percent). Moreover, just a third of Big Apple voters think Liu should resign as a result of the scandal, while 44 percent do not. In December, 28 percent thought he should resign, and 43 percent did not. Gracie Mansion's current tenant has seen a significant uptick in his approval rating: 54 percent of voters now approve of the job Bloomberg is doing, up from 46 percent a month ago. Just 35 percent disapprove. The poll represents Bloomberg's best job rating since last September. "It's a good poll for Mayor Mike," said Carroll. Bloomberg's rising approval rating could be a boon for Quinn's mayoral chances: She is widely seen as a Bloomberg ally, though the two have split on some important issues as of late, including the city's new policy for homeless shelters, over which the council sued the mayor. The Quinnipiac University poll was conducted March 6-11, surveying 964 voters. The margin of error is plus-or-minus 3.2 percentage points.