Economist/YouGov national poll, conducted March 29-31:
https://docs.cdn.yougov.com/p8nwhxp50n/econTabReport.pdfThe poll distinguishes between who voters support *now*, and who they might have already voted for…
Who do you prefer to be the nominee between Biden and Sanders?:
Biden 55%
Sanders 40%
Who did or will you vote for? (did or will depending on whether their primary has already happened):
Biden 47%
Sanders 34%
Another Candidate 15%
fav/unfav % among all voters:
Biden 44/45% for -1%
Sanders 44/47% for -3%
Trump 46/50% for -4%