Washington (CNN) Donald Trump and Hillary Clinton hold strong leads over their rivals in Pennsylvania, according to an NBC/Wall Street Journal/Marist poll released Sunday.

Trump leads the Republican field among likely Republican voters with 45% support compared to Ted Cruz's 27% and John Kasich's 24%.

Clinton is beating Sanders 55%-40% among likely Democratic voters.

Trump is doing best among Republican men and those without a college degree but losing with women and college graduates, according to the poll.

Clinton is beating Sanders handily among African-Americans, voters older than 45, women and self-identified Democrats.

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