The charts above are from a new Morning Consult Poll. The survey was done between October 16th and 18th of a national sample of 14,994 likely voters, and has a margin of error of only 1 point.
The top chart shows Biden with a 9 point lead (52% to 43%). Note that since June the race has been very stable.
The second chart shows the demographic breakdown of voters.
The third chart shows the favorability ratings for Biden and Trump.