Story highlights Hillary Clinton leads Bernie Sanders in Pennsylvania, 52% to 39%, a Monmouth poll shows

The poll was conducted before Clinton's win in the New York primary

Washington (CNN) Hillary Clinton has a 13-point lead over Bernie Sanders in Pennsylvania, a new Monmouth University poll shows.

Among likely Democratic primary voters in the Keystone State, Clinton has 52% support to Sanders' 39%.

Fueling Clinton's lead is a major gender gap. The former secretary of state holds a 61% to 32% edge among women, compared to Sanders' smaller 50% to 41% advantage with men.

Clinton also outperforms Sanders with voters aged 50 and older, leading that group 57% to 33%, while Sanders' lead with those younger than 50 is just 48% to 46%.

Both these trends mirror voting results.

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