Four Republican presidential candidates lead Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE nationally in head-to-head match-ups, according to a new poll.



The Fox News survey released on Tuesday shows Ben Carson Benjamin (Ben) Solomon CarsonState AGs condemn HUD rule allowing shelters to serve people on basis of biological sex Biden cannot keep letting Trump set the agenda The Hill's 12:30 Report: Trump heads to New Hampshire after renomination speech MORE running the strongest against Clinton, with the retired neurosurgeon taking 50 percent, compared to only 39 percent for the former secretary of State.



Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE leads Clinton by 45 percent to 40, Jeb Bush leads Clinton 44 to 40 and Carly Fiorina leads Clinton 42 to 39, the poll found.

While it can be dangerous to read too much into any poll this early in the presidential contest, the Fox News survey wil give ammunition to those arguing that Vice President Biden would be a stronger Democratic candidate than Clinton.

Biden leads all of those same Republican contenders in head-to-head match-ups. He's up on Trump by 50 percent to 37, Bush by 46 to 41 percent and enjoys leads of 46 to 42 percent over both Carson and Fiorina.



Sen. Marco Rubio Marco Antonio RubioOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Democrats step up hardball tactics as Supreme Court fight heats up Press: Notorious RBG vs Notorious GOP MORE (R-Fla.) does the best in a head-to-head match-up against Biden, trailing by only one point, 44 to 43 percent.



In previous polls, Clinton held leads over all of those candidates except for Bush, who led 44 to 42 percent over Clinton in an August poll.



The Fox News survey also provides new evidence underlying Carson’s early strength.



Carson raised $20 million in the second quarter, which will likely be the biggest haul of any of the GOP contenders. He routinely attracts thousands of supporters on the campaign trail and is firmly in second place in polls of the Republican presidential nomination, trailing only Trump.



The poll found Clinton maintaining a healthy lead in the race for the Democratic presidential nomination, taking 45 percent support, followed by Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.) at 25 percent and Biden at 19 percent.



That’s a bigger lead for Clinton than in the same poll from September, when the former secretary of State took 44 percent support, followed by Sanders at 30 and Biden at 18.

Biden has yet to decide whether to enter the race.



The Fox News poll of 1,004 registered voters was conducted between Oct. 10 and Oct. 12 and has a 3-percentage-point margin of error.