Michelle Obama would be tied with Biden as frontrunner if she ran in 2020, poll shows

Former first lady Michelle ObamaMichelle LeVaughn Robinson ObamaBiden could be picking the next president: VP choice more important than ever Lobbying world Michelle Obama hosts from-home voter registration party with DJ D-Nice MORE tied with 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 as the top choice among Democratic voters when asked who should be the party's nominee in 2020.

A Hill-HarrisX poll released Tuesday found that 25 percent of Democrats said they would back Obama in the party primary over nine other declared or potential candidates, including 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.), 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.), and former Rep. Beto O’Rourke (D-Texas).

Obama has said she is not running, and Biden has not announced whether he will launch another White House bid.

Harris came in third among Democratic voters, with 12 percent saying they would support her. Sanders was a close fourth, at 11 percent. O’Rourke, former New York City Mayor Michael Bloomberg, Warren, and Sens. Cory BookerCory Anthony BookerDemocrats eye additional relief checks for coronavirus Lawmakers, labor leaders ramp up calls to use Defense Production Act Democratic senators call on FDA to drop restrictions on blood donations from men who have sex with men MORE (D-N.J.), Amy KlobucharAmy KlobucharBiden tops Trump by 9 points in Fox News poll States should plan now for November voting options With VP pick, Biden can't play small ball in a long ball world MORE (D-Minn.) and Sherrod BrownSherrod Campbell BrownDemocrats eye additional relief checks for coronavirus Amazon doubling overtime pay for warehouse workers Democrats grow nervous over primary delays MORE (D-Ohio) all failed to exceed 6 percent.

Biden and Obama garnered 23 percent and 22 percent, respectively, when factoring in independent voters, who are allowed to vote in many state primary elections.

When combining Democratic and independent voters, Sanders received 12 percent, followed by 8 percent for Harris.

Molly Murphy, a partner at Democratic consulting firm ALG Research, said Obama's popularity is helped in large part because she has never thrown her hat into the ring.

"Because she's never been a candidate, she's never been on the ballot, she's avoided a certain degree of scrutiny that candidates face. And so she's all icing for people, it's all good," Murphy said Tuesday on "What America's Thinking," Hill.TV's show about public opinion and polling.

In the Hill-HarrisX poll, 12 percent of independents and Democrats combined said they preferred another candidate, beyond the choices that were offered, suggesting some dissatisfaction among non-Republican voters with the field of declared and potential candidates.

A November Hill-HarrisX poll found that 14 percent of Democratic respondents picked "none of the above" when asked to choose between Warren, Biden, Sanders, Booker, Harris, Bloomberg and former Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonBiden tops Trump by 9 points in Fox News poll With VP pick, Biden can't play small ball in a long ball world Hillary Clinton on US leading in coronavirus cases: Trump 'did promise "America First"' MORE.

Obama's surprise appearance at the Grammy awards this month promoted some speculation about a possible 2020 bid. In December, the former first lady said that she had "never" considered a political career and that she had no intention of running for office.

The Hill-HarrisX survey was conducted Feb. 17-18 among a nationally representative sample of registered voters. The overall survey has a sampling margin of error of 3 percentage points.

The group of Democratic respondents has a sampling margin of error of 5 percentage points, and the Democratic and independent set has a sampling margin of error of 4 percentage points.

—Matthew Sheffield