They’re younger. Roughly a third (34%) of nonvoters are younger than 30 and most (70%) are under 50; among likely voters, just 10% are younger than 30 and only 39% are under 50.

They’re more racially and ethnically diverse. Fully 43% of those who are not likely to cast ballots Tuesday are Hispanic, African American or other racial and ethnic minorities, roughly double the percentage among likely voters (22%).

They’re less affluent and less educated. Nearly half of nonvoters (46%) have family incomes less than $30,000, compared with 19% of likely voters. Most nonvoters (54%) have not attended college; 72% of likely voters have completed at least some college.