These charts are from the new NBC News / Wall Street Journal Poll -- done between September 13th and 16th of a national sample of 1,000 registered voters, with a 3.1 point margin of error.
The poll shows Biden with an 8 point lead over Trump.
The survey also asked respondents when and how they were going to vote. Republicans had a lead among those saying they would vote in person on Election Day. Democrats had the lead among those saying they would vote early in person, and those saying they would vote by mail.