Shifts in Support Since 2016, Based on Demographics

Change in Democratic margin in pre-election polls of registered voters.

Table: Source: Source: Live-interview, R.D.D. telephone polls of registered voters conducted after the third presidential debate in 2016; post-third-debate polls archived at the Roper Center; 2020 polls from ABC/Washington Post, Monmouth University, Quinnipiac University, CNN/SSRS, NBC/WSJ.