A general election Rasmussen Reports poll released Friday shows Sen. Bernie Sanders Bernie SandersThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Bernie Sanders: 'This is an election between Donald Trump and democracy' The Hill's 12:30 Report: Trump stokes fears over November election outcome MORE (I-Vt.) leading President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE by 1 percentage point in a hypothetical 2020 head-to-head, within the survey's margin of error.

In the hypothetical match-up, Sanders had support from 46 percent of likely voters while Trump had support from 45 percent, according to the Rasmussen poll. In a previous poll from the conservative-leaning Rasmussen in April, Trump was leading Sanders, 47 percent to 44 percent.

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In the latest match-up, Sanders would have 75 percent of the Democratic vote, up one point from the April survey, while Trump would bring in 80 percent of the Republican vote, down from 83 percent in the past poll.

Thirty-three percent of all respondents think Trump will be defeated next year by the eventual Democratic nominee, the survey says. Forty-six percent say he is likely to be reelected, and 11 percent believe he will be impeached before the end of his first term.

Researchers surveyed 5,000 likely voters between July 21 and 25 and July 28 and Aug. 1. The results have a margin of error of plus or minus 1.5 percentage points.

Sanders is among more than two dozen people vying for the 2020 Democratic nomination. He has consistently polled near the top of the field and is one of just eight candidates to thus far qualify for the September debates.

A Fox News poll from last week showed Sanders besting Trump by 6 points, while former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE held a 10-point advantage over the commander in chief.