These are the polls taken since the Democratic debate, as reported on the website of RealClearPolitics.
Note that Hillary Clinton holds a significant lead in all the polls -- a lead of from 15 to 31 points. Her lead in the RealClearPolitics average of the polls is 21.8 points.
NOTE -- A majority of these polls included Webb and Chafee (who have since dropped out) and Biden (who has declared he is not a candidate for the nomination). Biden's departure will increase these advantages for Clinton.
