Poll: Biden has 18-point lead on Democratic field, Sanders only other contender in double digits

Former Vice President Joe BidenJoe BidenThe Hill's Campaign Report: Runoff elections in Texas, Alabama set for Tuesday Biden campaign slams White House attacks on Fauci as 'disgusting' Biden lets Trump be Trump MORE leads his nearest presidential primary contender by 18 points, further solidifying his status as the crowded field’s front-runner, according to a poll released Tuesday.

A Morning Consult poll shows Biden with the support of 38 percent of Democratic primary voters, beating out Sen. Bernie SandersBernie SandersOVERNIGHT ENERGY: EPA declines to tighten smog standards amid pressure from green groups | Democrats split on Trump plan to use development funds for nuclear projects| Russian mining giant reports another fuel spill in Arctic Biden lets Trump be Trump Democrats split on Trump plan to use development funds for nuclear projects MORE (I-Vt.), his nearest competitor, who was supported by 20 percent of the respondents.

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Biden and Sanders are the only two candidates who had support in the double-digits. They are followed by Sen. Elizabeth WarrenElizabeth WarrenIn politics, as in baseball, it ain't over till it's over Trump defends Roger Stone move: He was target of 'Witch Hunt' Democrats blast Trump for commuting Roger Stone: 'The most corrupt president in history' MORE (D-Mass.) with 9 percent, South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegIn politics, as in baseball, it ain't over till it's over Biden campaign hires top cybersecurity officials to defend against threats Biden strikes populist tone in blistering rebuke of Trump, Wall Street MORE (D) and Sen. Kamala HarrisKamala Devi HarrisHillicon Valley: Facebook considers political ad ban | Senators raise concerns over civil rights audit | Amazon reverses on telling workers to delete TikTok Senators raise concerns over Facebook's civil rights audit Biden's marijuana plan is out of step with public opinion MORE (D-Calif.) with 7 percent, and former Rep. Beto O’Rourke (D-Texas) with 4 percent.

The former vice president’s support extends to 42 percent over the primary field when narrowing the survey to primary voters in early states, which Morning Consult said included Iowa, New Hampshire, South Carolina or Nevada. Sanders remains at 20 percent among such voters. 

Biden and Sanders have emerged as the crowded field’s top two candidates, setting up what could be a prolonged fight between the party’s centrist and progressive flanks. However, when asked who their second choice would be if their chosen nominee failed to win the nomination, Biden supporters chose Sanders and Sanders supporters chose Biden. 

The two candidates also have the highest favorability ratings among all their opponents, with Biden garnering a 76 percent approval rating and Sanders getting a 74 percent approval rating.

Biden has enjoyed a surge of support since announcing his White House bid in April, topping every national poll since his launch, largely appearing to be at the expense of support for Sanders.

The Morning Consult poll surveyed 16,368 registered voters who indicate they may vote in their state’s Democratic primary or caucus from May 20 to 26 and has a margin of error of plus or minus 1 percentage point. It also interviewed 626 voters in Iowa, New Hampshire, South Carolina or Nevada during that same time frame and has a margin of error of plus or minus 4 percentage points for that subset.