More than 60 percent of Democratic and Democratic-leaning voters in a new CNN poll say former Vice President Joe Biden Joe BidenJoe Biden looks to expand election battleground into Trump country Trump puts Supreme Court fight at center of Ohio rally Special counsel investigating DeVos for potential Hatch Act violation: report MORE should run for president in 2020.

The survey, which was conducted by SSRS and released on Wednesday, found that 62 percent of Democratic voters surveyed want Biden to run for the party's presidential nomination.

Meanwhile, 28 percent of Democratic and Democratic-leaning respondents said Biden should stay out of the presidential race. Ten percent said they had no opinion.

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A previous CNN poll, released in October 2015, had shown 47 percent of respondents saying that Biden should run for president.

The latest survey comes as Biden, who served as vice president under former President Obama, mulls a presidential campaign to challenge President Trump Donald John TrumpBubba Wallace to be driver of Michael Jordan, Denny Hamlin NASCAR team Graham: GOP will confirm Trump's Supreme Court nominee before the election Southwest Airlines, unions call for six-month extension of government aid MORE.

He said last month that he would make a decision on running "soon."

The Democratic presidential field has gradually increased in the last month, with prominent senators like Kamala Harris Kamala HarrisJoe Biden looks to expand election battleground into Trump country Fox's Napolitano: Supreme Court confirmation hearings will be 'World War III of political battles' Rush Limbaugh encourages Senate to skip hearings for Trump's SCOTUS nominee MORE (Calif.), Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (N.J.) and Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE announcing their candidacy.

Forty-nine percent of Democratic and Democratic-leaning voters said the ability to beat Trump was extremely important to them when deciding on a candidate.

About half of the people who prioritized the ability to beat Trump said they were very likely to support Biden, according to CNN.

The CNN poll was conducted between Jan. 30 and Feb. 2 among a national population of 1,011 adults, including 477 Democrats and Democratic-leaning independents. The margin of error for the subsample is 5.6 percentage points.