Elizabeth Warren, Joe Biden, and Bernie Sanders  Getty Images

By Nikki Schwab | New York Post

WASHINGTON – The top three ​Democratic candidates cleanly beat President Trump in head-to-head match-ups, a new NBC News/Wall Street Journal poll shows.

Former Vice President Joe Biden performs best against Trump​, getting 51 percent of the vote to Trump’s 42 percent.

Biden​ ​​performs better with independents, whites and suburban voters compared to some of the more liberal candidates in the large Democratic field.

That being said, Sen. Bernie Sanders, the self-proclaimed Democratic socialist, beats Trump by ​seven ​percentage ​point​s – ​​​ ​50 percent to 43 percent.​

Sen. Elizabeth Warren also beats Trump outside the poll’s 3.5 percent margin of error. She earns 48 percent of the vote, while Trump gets 43 percent.

Sen. Kamala Harris wins against Trump too, but only by a point.

The​ ​p​​oll has her ​at 45 percent to Trump’s 44 percent.

​Biden, Warren, Sanders and Harris are the only candidates who have a double-digit share of Democratic primary voters.

Biden leads the pack with 26 percent support, followed by Warren, who has bypassed her ideological counterpart Sanders in most recent polling.

In the NBC News poll, Warren has the support of 19 percent of respondents, while Sanders is at 13 percent.

Harris also has 13 percent support after her strong first debate performance.

Following the top four is South Bend, Indiana​,​ Mayor Pete Buttigieg with 7 percent support.

Businessman Andrew Yang and former Rep. Beto O’Rourke have 2 percent support.

All the other candidates are polling at 1 percent of less.

Candidates need to be polling at 2 percent of higher to start qualifying for the Democratic debates in September and October. Right now just 10 of 25 candidates have met some of the polling or donor requirements to appear at the fall debates.

The poll was conducted between July 7-9 and surveyed 800 registered voters. It has a plus/margin 3.5 percentage point margin of error.​