Biden opens up double-digit lead nationally over Sanders: poll

Former Vice President Joe BidenJoe BidenSunday shows preview: Coronavirus dominates as country struggles with delta variant Did President Biden institute a vaccine mandate for only half the nation's teachers? Democrats lean into vaccine mandates ahead of midterms MORE has opened up a double digit lead nationally over Sen. Bernie SandersBernie SandersSunday shows preview: Coronavirus dominates as country struggles with delta variant Democrats urge Biden to commute sentences of 4K people on home confinement Briahna Joy Gray: Push toward major social spending amid pandemic was 'short-lived' MORE (I-Vt.) in the race for the Democratic presidential nomination, according to a new poll. 

The latest Reuters-Ipsos survey finds Biden at 45 percent support ahead of Sanders who has garnered 32 percent support. The recent increase shows a 24-point swing over the same poll from nine days ago, when Sanders had opened up an 11-point lead over Biden. 

The race has changed dramatically since then. 

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Biden won 10 of the 14 states that voted on Super Tuesday, sweeping the southern states and winning unexpected contests in Maine, Massachusetts and Minnesota.

The previous Reuters-Ipsos survey found Sanders catching up to Biden among black voters.

But Biden won about two-thirds of the black vote on Super Tuesday, helping him clinch massive victories in Virginia, North Carolina and Alabama. 

The Reuters-Ipsos survey was conducted between March 4 and March 5, before Sen. Elizabeth WarrenElizabeth WarrenFederal Reserve officials' stock trading sparks ethics review Manchin keeps Washington guessing on what he wants Warren, Daines introduce bill honoring 13 killed in Kabul attack MORE (D-Mass.) dropped out of the race.

The poll found that Sanders is the top second choice among Warren’s supporters at 30 percent, but Biden is close behind at 25 percent. 

A majority of Democrats, 54 percent, view Biden as having the best chance at defeating President TrumpDonald TrumpKinzinger says Trump 'winning' because so many Republicans 'have remained silent' Our remote warfare counterterrorism strategy is more risk than reward Far-right rally draws small crowd, large police presence at Capitol MORE, against only 25 percent who said Sanders. Sanders was viewed as the most electable candidate in the same poll from late February.

Forty-six percent of Democrats said choosing the most electable candidate against Trump is their top issue. Health care falls a distant second at only 14 percent. 

The Reuters-Ipsos survey of 568 registered Democrats has a 5 percentage point margin of error.