Hillary Clinton leads Bernie Sanders by 13 percentage points in New York, just a week before the state holds its primary, according to a Quinnipiac University poll released Tuesday.

The survey found 53 percent of likely Democratic voters back Clinton while 40 percent said they support Sanders. Clinton leads Sanders among black Democrats 65 to 28 percent.

Clinton leads among Democratic women 55 to 38 percent and leads among Democratic men 48 to 43 percent. Half of white Democratic voters said they support Clinton and 45 percent are for Sanders. Clinton also leads among New York City's Democratic voters 53 to 37 percent and among Democratic voters in the suburbs 55 to 40 percent. She and President Clinton have lived in Chappaqua, New York for nearly two decades.

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Sanders leads among Democratic voters 18 to 44 years old while Clinton leads among older voters. Sanders leads among those who identified as very liberal while Clinton leads among those who said they're somewhat liberal or moderate to conservative.

Seven percent of Democrats said they remain undecided, just a week before the state's April 19 primary. Eighteen percent of those who named a candidate in the Democratic race said they could change their mind by next Tuesday.

In the Republican race, meanwhile, the poll found 55 percent of likely GOP primary voters in New York back Donald Trump, 20 percent support John Kasich and 19 percent support Ted Cruz.

Six percent of GOP primary voters said they are undecided and nearly a quarter who named a candidate said they could change their mind over the next week.

The results measuring support in the Democratic race were similar to the results from a Monmouth University survey and Fox News poll released this week.

New York operates under a closed primary system, which means only registered Democrats and Republicans can cast ballots in their respective primaries and independents cannot participate.

The Quinnipiac survey, conducted between April 6 and 11, polled 550 GOP primary voters with a 4.2 percentage point margin of error and 860 Democratic voters with a 3.3 percentage point margin of error.