Story highlights A New York poll out Thursday shows Hillary Clinton ahead of Bernie Sanders 57% to 40%

Clinton outperforms Sanders in New York among women, men and those 45 or older

(CNN) Hillary Clinton has opened up a 17 percentage point lead in the New York Democratic primary, according to a new poll, maintaining a double-digit lead over Bernie Sanders.

The Wall Street Journal/NBC News/Marist poll, released Thursday, finds the former secretary of state ahead of the Vermont independent senator 57% to 40% in the Empire State. Thursday's poll tracks with another WSJ/NBC/Marist poll, released Tuesday, that showed Clinton holding a 14-point lead.

Clinton outperforms Sanders in New York among women, men, those 45 or older, and those in New York City and the surrounding suburbs, while Sanders holds his advantage among young voters and statistically ties Clinton among upstate voters.

A Clinton win in delegate-rich New York on April 19 would provide crucial breathing room for her campaign, as Sanders has continued to make a spirited challenge in the Democratic nominating contest despite trailing in the delegate count.

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