As a polling entity, the ABC News/Washington Post effort is rated as one of six A+ pollsters on the FiveThirtyEight statistical organization rating card. The media partners just released a pair of polls this week, one from Arizona and the other Florida. They both capture how much a survey sample can swing based upon segmentation, in this case from registered to likely voters.
The Arizona poll (9/15-20; 701 AZ registered voters; 579 AZ likely voters) finds President Trump trailing former Vice President Joe Biden, 47-49% with registered voters, but leading 49-48% among those who are most likely to vote. In Florida, we see an even greater split. That ABC/WP survey (9/15-20; 765 FL registered voters; 613 FL likely voters) projects Mr. Biden holding a bare 48-47% edge among those registered to vote but leads 51-47% within the segment of those most likely to cast their ballot. This example underscores the importance of the voter participation model in determining election outcomes.
The Rundown Blog
Learn more about the candidates running in key elections across the United States.