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

Former first lady Michelle ObamaMichelle LeVaughn Robinson ObamaPrinceton must finish what it started The Hill's Morning Report - Presented by Facebook - Justices rule Manhattan prosecutor, but not Congress, can have Trump tax records The Hill's Morning Report - Presented by Facebook - Trump takes on CDC over schools MORE tied with former Vice President Joe BidenJoe BidenTrump commutes Roger Stone's sentence Hillicon Valley: Facebook considers political ad ban | Senators raise concerns over civil rights audit | Amazon reverses on telling workers to delete TikTok House Democrat warns about 'inaccurate' polls: Trump voters 'fundamentally undercounted' 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 SandersTrump glosses over virus surge during Florida trip The Hill's Coronavirus Report: Fauci says focus should be on pausing reopenings rather than reverting to shutdowns; WHO director pleads for international unity in pandemic response Ex-Sanders aide says Biden unity task forces need to go farther MORE (I-Vt.), 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.), Elizabeth WarrenElizabeth WarrenDemocrats blast Trump for commuting Roger Stone: 'The most corrupt president in history' Pharma pricing is a problem, but antitrust isn't the (only) solution The Hill's Campaign Report: Democratic Unity Taskforce unveils party platform recommendations 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 blast Trump for commuting Roger Stone: 'The most corrupt president in history' Koch-backed group urges Senate to oppose 'bailouts' of states in new ads Data shows seven Senate Democrats have majority non-white staffs MORE (D-N.J.), Amy KlobucharAmy KlobucharThe Hill's Coronavirus Report: Fauci says focus should be on pausing reopenings rather than reverting to shutdowns; WHO director pleads for international unity in pandemic response State election officials warn budget cuts could lead to November chaos Biden strikes populist tone in blistering rebuke of Trump, Wall Street MORE (D-Minn.) and Sherrod BrownSherrod Campbell BrownSenate Dems request briefing on Russian bounty wire transfers On The Money: Mnuchin, Powell differ over how soon economy will recover | Millions fear eviction without more aid from Congress | IRS chief pledges to work on tax code's role in racial wealth disparities IRS chief pledges to work with Congress on examining tax code's role in racial wealth disparities 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 ClintonTrump confirms 2018 US cyberattack on Russian troll farm Hillicon Valley: Facebook considers political ad ban | Senators raise concerns over civil rights audit | Amazon reverses on telling workers to delete TikTok Biden campaign hires top cybersecurity officials to defend against threats 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