Former Vice President Joe Biden Joe BidenSenate Republicans face tough decision on replacing Ginsburg What Senate Republicans have said about election-year Supreme Court vacancies Biden says Ginsburg successor should be picked by candidate who wins on Nov. 3 MORE and Sen. 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 (I-Vt.) both lead President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE in a hypothetical general election match-up in the battleground state of Ohio, according to a new poll.

Biden leads Trump by 4 points, at 49 percent support to the president's 45 percent, based on the NBC News–Marist survey released Monday. And Sanders leads Trump by 2 points in Ohio, at 48 percent to 46 percent.

Ohio is one of several states the Democratic National Committee is focusing on as part of its “Battleground Build-Up 2020” program, which aims to lay the groundwork for the eventual Democratic presidential nominee.

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Trump won the state in the 2016 election.

Ohio is one of four states set to hold its primary on Tuesday. Biden is leading Sanders there by a whopping 23 points, at 58 percent compared to Sanders’s 35 percent, based on the same poll.

The NBC News–Marist poll of Ohio was conducted March 10-13. It surveyed 1,710 registered voters, with a margin of error of 2.9 percentage points, and 486 likely Democratic primary voters, with a margin of error of plus or minus 5.6 percentage points.