Former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE has seen his lead in the Democratic presidential primary field in Michigan slip by double digits, according to a poll released Monday.

Biden holds a by 6-point lead over his closest opponent, Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE (I-Vt.), according to an Emerson poll, down from a 17-point lead over Sanders in March.

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While Biden’s overall support in the poll dropped from 40 percent to 34 percent, Sanders's support increased 5 points from 23 percent to 28 percent.

Sanders won the Michigan primary in his 2016 campaign against former Secretary of State Hillary Clinton Hillary Diane Rodham ClintonBloomberg rolls out M ad buy to boost Biden in Florida Hillicon Valley: Productivity, fatigue, cybersecurity emerge as top concerns amid pandemic | Facebook critics launch alternative oversight board | Google to temporarily bar election ads after polls close Trump pledges to make Juneteenth a federal holiday, designate KKK a terrorist group in pitch to Black voters MORE. The state ultimately went to President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE in the general election, who narrowly defeated Clinton by less than 12,000 votes in The Great Lakes State.

Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.) saw her support significantly rise in the Monday poll, jumping to third place with the support of 19 percent of respondents, up 11 points from March.

Sen. Kamala Harris Kamala HarrisTexas Democratic official urges Biden to visit state: 'I thought he had his own plane' The Hill's Campaign Report: Biden on Trump: 'He'll leave' l GOP laywers brush off Trump's election remarks l Obama's endorsements A game theorist's advice to President Trump on filling the Supreme Court seat MORE (D-Calif.) saw her support dip 9 points, down to 3 percent from 12. She’s now trailing South Bend, Ind., Mayor Pete Buttigieg Pete ButtigiegBillionaire who donated to Trump in 2016 donates to Biden The Hill's Morning Report - Sponsored by Facebook - GOP closes ranks to fill SCOTUS vacancy by November Buttigieg stands in as Pence for Harris's debate practice MORE in the state by 5 points.

Buttigieg had 0 percent support among those in the state polled in March, but as his name has gained more recognition, he moved up to fourth in the poll with 8 percent of the vote.

Sen. Cory Booker Cory Anthony BookerThe movement to reform animal agriculture has reached a tipping point Watchdog confirms State Dept. canceled award for journalist who criticized Trump 3 reasons why Biden is misreading the politics of court packing MORE (D-N.J.) is tied with Harris at 3 percent. No other candidates are polling above 2 percent in the Michigan poll.

The Michigan Democratic primary will take place on March 10, one week after Super Tuesday.

The poll surveyed 1,051 registered voters and was conducted between Oct. 31-Nov. 3. The margin of error is plus or minus 3 percentage points. The data is weighted for ethnicity, age, education and region.