Fox News poll shows Trump losing to Biden, Warren, Sanders and Harris

A Fox News poll released Thursday showed President TrumpDonald John TrumpGOP congressman slams Trump over report that U.S. bombed former anti-ISIS coalition headquarters US to restore 'targeted assistance' to Central American countries after migration deal Trump says lawmakers should censure Schiff MORE losing head-to-head matchups against four of the top Democratic presidential primary contenders.

The poll found Trump with 39 percent support among registered voters in head-to-head matchups against Sens. Bernie SandersBernie SandersOvernight Health Care — Presented by National Taxpayers Union — House Dems change drug pricing bill to address progressive concerns | Top Republican rejects Dem proposal on surprise medical bills | Vaping group launches Fox News ad blitz Democrats have reason to worry after the last presidential debate Krystal Ball on Sanders debate performance: 'He absolutely hit it out of the park' MORE (I-Vt.), Kamala HarrisKamala Devi HarrisHillicon Valley: FCC approves T-Mobile-Sprint merger | Dems wrangle over breaking up Big Tech at debate | Critics pounce as Facebook's Libra stumbles | Zuckerberg to be interviewed by Fox News | Twitter details rules for political figures' tweets Democrats have reason to worry after the last presidential debate 2020 Democrats recognize Pronouns Day MORE (D-Calif.), and Elizabeth WarrenElizabeth Ann WarrenButtigieg tweeted support for 'Medicare for All' in 2018 Overnight Health Care — Presented by National Taxpayers Union — House Dems change drug pricing bill to address progressive concerns | Top Republican rejects Dem proposal on surprise medical bills | Vaping group launches Fox News ad blitz Hillicon Valley: FCC approves T-Mobile-Sprint merger | Dems wrangle over breaking up Big Tech at debate | Critics pounce as Facebook's Libra stumbles | Zuckerberg to be interviewed by Fox News | Twitter details rules for political figures' tweets MORE (D-Mass.). The poll found Sanders beating Trump with 48 percent, Warren winning over Trump with 45 percent and Harris winning with 46 percent support.

Former Vice President Joe BidenJoe BidenTrump says lawmakers should censure Schiff Schiff says committees will eventually make impeachment inquiry transcripts public Trump threat lacks teeth to block impeachment witnesses MORE, meanwhile, beat Trump in the theoretical matchup with 50 percent support among those surveyed, compared to Trump's 38 percent.

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Among Democratic primary contenders, Warren saw the largest gain in support in the poll — an 8 percent jump from last month's survey. Warren, according to the poll, took second place behind Biden with the support of 20 percent of Democratic primary voters.

Sanders dropped to third, now at 10 percent in the poll and the only other candidate aside from Warren and Biden scoring double digit support among voters.

Biden dropped slightly in the poll from a previous Fox News poll in July, from 33 percent to 31 percent, but remains the clear front-runner in the race according to the survey.

The Fox News poll was taken between Aug. 11-13 and contacted 1,013 registered voters on landlines and cellphones. The margin of error is plus or minus 3 percent for all registered voters, and 4.5 percent for Democratic primary voters.