Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE has narrowed in on Democratic presidential rival Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE in the latest national poll of the race as the pair battle ahead of Tuesday's primary in New York.

Clinton holds a 2-point edge nationally over Sanders, 50 to 48 percent, among Democratic primary voters surveyed in the NBC News/Wall Street Journal poll published Monday.

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Clinton held a 9-point lead in the survey last month, besting the Independent Vermont senator, 53 to 44 percent. In January, she led by 25 points, 59 to 34 percent.

The pair have exchanged leads in several recent national polls, illustrating the split within the party despite Clinton holding a big lead among delegates needed to secure the nomination.

Clinton is the favorite in polls to win the New York primary on Tuesday, which would blunt momentum for Sanders, who has won eight of the last nine Democratic contests.

Nationally, Sanders leads Clinton, 66 to 32 percent, among white men in the latest poll, 66 to 34 percent among those ages 18–49, and 69 to 29 percent among independents and Republicans.

Meanwhile, Clinton leads 62 to 35 percent among older voters and holds a big lead among Democrats, 59 to 40 percent, over the self-described democratic socialist.

The survey of 339 Democratic primary voters was conducted April 10-14 with a margin of error of 5.32 points.