Nearly half of voters in a new poll would not support candidates who have endorsed presumptive Republican presidential nominee Donald 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.

Thirty-eight percent said they are “much less likely” to vote for those who back Trump in the Morning Consult survey released early Tuesday.

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Eleven percent said they are “somewhat less likely” to cast ballots for candidates supporting the billionaire.

Just 16 percent say they are “much more likely” to support down-ballot candidates who have voiced support for Trump.

And a mere 17 percent said they are “somewhat more likely” to select candidates who back the real estate mogul instead. Another 18 percent “don’t know” or had “no opinion.”

Morning Consult surveyed 2,003 registered voters May 5–9. Its poll has a margin of error of 2 percentage points.

Democrats are increasingly bullish that Trump will negatively impact down-ballot Republican congressional candidates.

“The House is in play because of their nominee,” Rep. Joe Crowley (N.Y.), vice chairman of the House Democratic Caucus, said on April 27.

Democratic National Committee Chairwoman Debbie Wasserman Schultz (Fla.) said on the same day that Trump boosts the chances of Democrats in all races.

“I think the likelihood that they’re going to nominate the most extreme nominee makes it much better for us, for our candidates, all across the country,” she said. "Not just in the House, not just in the Senate, but up and down the ballot.”

The nonpartisan Cook Political Report last Friday shifted 11 states toward Democrats in light of Trump’s status as the presumptive Republican standard-bearer.

Democratic presidential front-runner 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 and down-ballot Democrats have repeatedly tried to tie Trump’s blunt rhetoric to Republican candidates running this election cycle.