"Overall support" is the result of the survey among all those surveyed.

Broken down:

Support was 82% among Democrats, 70% among Republicans, and 72% among independents.

By age, support was 67% among 18-29 year olds, 68% among 30-45 year olds, 82% among 46-65 year olds, and 76% for those older than 65.

By gender, support was 81% among women and 71% among men.

In Gallup polls since they started asking in 1944 until this election, only about 20% of the public has supported the current system of awarding all of a state's electoral votes to the presidential candidate who receives the most votes in each separate state (not mentioned in the U.S. Constitution, but later enacted by 48 states) (with about 70% opposed and about 10% undecided).