NEW YORK - With one week to go until voters head to the polls, New York City Mayor Michael Bloomberg leads his main rival in the mayoral race by 18 points, a survey found on Monday.

It's been shaping up all along, and now the new numbers say it looks like a Bloomberg blow-out, said Maurice Carroll, director of the Quinnipiac University Polling Institute.

Quinnipiac surveyed 1,088 New York City voters between October 23 to 25 and found Bloomberg leading Comptroller William Thompson by 53 percent to 35 percent with 10 percent undecided.

Bloomberg is running for a third term as an independent, while Thompson is running as the Democratic Party candidate. The election is due to take place on November 3.

Bloomberg leads 81 percent to 10 percent among Republicans and 61 percent to 25 percent among independent voters, the poll found.

The mayor leads 46 percent to 44 percent among Democratic voters.

White voters support Bloomberg by 59 percent to 30 percent, while black voters back Thompson 57 percent to 24 percent. Hispanic voters also prefer the mayor at 49 percent to 35 percent.

The Thompson campaign has stuttered, said Carroll.

The comptroller tapped into a public disapproval for scrapping term limits, paving the way for Bloomberg to seek a third term, he said.

But that was pretty much their only issue and it doesn't seem to have been nearly enough, Carroll said.

The survey had a margin of error of plus or minus 3 percent points.

(Reporting by Ciara Linnane; Editing by Andrea Ricci)

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