All Post-debate#3 Poll Averages: Biden 27, Warren 21, Sanders 17, Buttigieg 7, Harris 5 (Biden +6)

https://projects.fivethirtyeight.com/polls/president-primary-d/national/
https://www.realclearpolitics.com/epolls/2020/president/us/2020_democratic_presidential_nomination-6730.html#polls

All polls are listed from RCP and 538 except that if more than one poll occurred more than once, only the most recent one was chosen and the older one eliminated. Candidates who only had less than 5% were not listed below (sorry, go to the link to find there percentages). In some cases the figures from the two sources disagreed in which case I used those from 538.

Biden 27, Warren 21, Sanders 17, Buttigieg 7, Harris 5 (Biden +6)

Candidates Biden Warren Sanders Buttigieg Harris
RCP Average (rounded) 10/16-22: 27 21 17 7 5 Biden +6
Quinnipiac A- (LV) 10/17-21: 21 28 15 10 5 Warren +7
CNN/SSRS A- (RV) 10/17-20: 34 19 16 6 6 Biden +15
YouGov B (LV) 10/20-22: 24 21 15 8 5 Biden +3
The Hill C+ (RV) 10/21-22: 27 19 14 6 5 Biden +8
Emerson B+ (LV) 10/18-21: 27 21 25 6 5 Biden +2
Morning Consult B- (LV) 10/16-20: 30 21 18 6 6 Biden +9
Ipsos B+ (RV) 10/17-18: 24 17 15 5 4 Biden +7
SUSA A (LV) 10/15-16: 32 22 17 5 7 Biden +10

RCP is strange. One time they have 7 polls and then 3-5. Time frame doesn't seem to be the differences. Sometimes their figures differ from 538 (LV vs. RV? and sometimes entry error?). I chose the 538 figures and did not check the original sources.