A sample of n=310 respondents said they supported Clinton 61-Sanders 34.
W/ Biden:
Biden - 35% of Clinton supporters and 15% of Sanders '16 supporters.
Sanders - 14% of Clinton supporters and 46% of Sanders '16 supporters.
Harris - 12% of Clinton supporters and 8% of Sanders '16 supporters.
Warren - 8% of Clinton supporters and 6% of Sanders '16 supporters.
O'Rourke - 8% of Clinton supporters and 2% of Sanders '16 supporters.
W/O Biden:
Sanders - 22% of Clinton supporters and 52% of Sanders '16 supporters.
Harris - 17% of Clinton supporters and 11% of Sanders '16 supporters.
Warren - 11% of Clinton supporters and 7% of Sanders '16 supporters.
O'Rourke - 9% of Clinton supporters and 3% of Sanders '16 supporters.
Also, O'Rourke does better with older voters (50+) rather than younger voters (18-49). With Biden, it's 8% and 4% respectively and without Biden, it's 11% and 5% respectively. Beto doesn't seem to be as much of a threat to Sanders that I thought he would be, at least not right now. And Harris does better with younger voters than older voters in this poll while past polls show the opposite.
Sanders excluding Supers had like 46% of the Pledged delegates so the poll in general oversamples Clinton 2016 voters meaning Biden & Sanders could actually be tired or Sanders could be ahead. Anyways they are both within the margin of error.
Sanders retain around half of this 2016 vote. He has to get that up to 60-70% if he wants to win. His Clinton 2016 voter numbers are better than expected. O'Rourke doesn't seem much of a threat to Sanders' young voter base.
