I have deliberately avoided the Bernie Wars.

[George II]

118. Here is the methodology of that poll, and the limited, cherry-picked choices for respondents....

Methodology:

This survey was conducted online within the United States between August 17-22, 2017 among 2,263 registered voters by The Harris Poll. The results reflect a nationally representative sample. Results were weighted for age within gender, region, race/ethnicity, marital status, household size, income, employment, and education where necessary to align them with their actual proportions in the population. Propensity score weighting was also used to adjust for respondents’ propensity to be online.

1. It is an online poll, which the pollsters all but admit is inaccurate by their last statement.
2. Results were weighted for a variety of factors, possibly subjectively (they don't say), further contributing to its inaccuracy.
3. As in points 1 and 2, the results were weighted, possibly subjectively (they don't say), based on how much time respondents might be online.

Respondents were able to choose only from a limited, cherry picked group of 12 "active politicians", not ALL of whom are politicians or are active:

Donald Trump
Hillary Clinton
Bernie Sanders
Mike Pence
Paul Ryan
Nancy Pelosi
Elizabeth Warren
Mitch McConnell
Jeff Sessions
Stephen Bannon
Chuck Schumer
Rex Tillerson

The results clearly determine who is most "popular" of only those 12, not "all" politicians.

Politicians not included in this list are Kamala Harris, Cory Booker, Patty Murray, Jerry Brown, Andrew Cuomo, Kirstin Gillibrand, Martin O'Malley, Tim Kaine, John Kasich, Al Franken, Sherrod Brown, Amy Klobuchar (need I go on?) How do we know that none of those politicians might have wound up being rated higher that the 12 listed by the pollster?

Not only that, but the conclusion drawn is that the field was composed of "active" politicians at time of the poll (late August). However, at that time Hillary Clinton was no longer an active politician, and Stephen Bannon (who was NEVER a "politician" anyway) had already been fired from his position in the administration.

So now you see all of the flaws in that so-called "poll"?