I saw the results on Twitter:
Sanders 20%
Clinton 17%
Biden 15%
Warren 14%
Booker 8%
Franken 6%
I'm also not buying the premise that he's been the Democrats' choice prior to this poll.
If you consolidate the results:
Sanders wing totals 40%
Corporatist DLC wing totals 40%
Democrats are still divided
You're including Franken in the Sanders wing even though he was one of the earliest and most vocal Clinton supporters in the Senate?
How many moderates would vote for Franken over Clinton, Biden & Booker? Very few.
People who are concerned about Bernie's age or Warren will go for Franken. Franken is popular among the progressive base, especially due to his performance in hearing.
And it is difficult to say how much of the progressive vote is with Biden or Clinton, etc or moderates with Sanders.
What we can say is that the Strong Progressives vs Moderates vote is somewhere around 50:50.