New York City voters disapprove of Mayor Michael Bloomberg's job performance by a margin of 51% to 39%, his lowest approval rating in eight years, according to a poll released Wednesday.

The survey from the Quinnipiac University Polling Institute showed a majority of voters in only one borough -- Manhattan -- approved of the mayor's job performance. Disapproval in the other boroughs ranged from a high of 66% on Staten Island to 58% in Brooklyn to 49% in the Bronx.

The...