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

A Fox News poll released Thursday showed President TrumpDonald John TrumpHealth insurers Cigna, Humana waive out-of-pocket costs for coronavirus treatment Puerto Rico needs more federal help to combat COVID-19 Fauci says April 30 extension is 'a wise and prudent decision' 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 SandersCoronavirus makes the campaign season treacherous for Joe Biden Biden could be picking the next president: VP choice more important than ever Democrats eye additional relief checks for coronavirus MORE (I-Vt.), Kamala HarrisKamala Devi HarrisBiden tops Trump by 9 points in Fox News poll Biden could be picking the next president: VP choice more important than ever With VP pick, Biden can't play small ball in a long ball world MORE (D-Calif.), and Elizabeth WarrenElizabeth WarrenBiden tops Trump by 9 points in Fox News poll Hillicon Valley: Apple rolls out coronavirus screening app, website | Pompeo urged to crack down on coronavirus misinformation from China | Senators push FTC on price gouging | Instacart workers threaten strike Democratic Senators urge FTC to prevent coronavirus price gouging 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 BidenCoronavirus makes the campaign season treacherous for Joe Biden Biden tops Trump by 9 points in Fox News poll Unions urge Chamber of Commerce to stop lobbying against Defense Production Act 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.