New Marist/PBS & NBC/WSJ polls bring us to a critical mass of October live-interview national polls, and to me Biden& #39;s gains appear to be pretty even across the board (except for Black voters, where there wasn& #39;t much room to grow).

To be clear, "final 2016 polls" are via @Nate_Cohn/ @UpshotNYT& #39;s estimates and this chart is my running average of 2020 national live-interview poll crosstabs, including NYT/Siena, CNN, ABC/WaPo, NBC/WSJ, Fox, Marist/PBS, Quinnipiac, Monmouth, Suffolk and Grinnell/Selzer.

One fascinating takeaway is that Biden& #39;s 12% lead over Trump is the same size as in June/July, but:

1) far fewer undecideds today (54%-42% vs. 52%-40%)
2) Biden& #39;s average lead has expanded by 4% since June/July among seniors & Hispanics

Also: to the extent there are still undecided voters - and there aren& #39;t very many of them compared to 2016! - they skew young and Hispanic/Latino.