But none of the February primary states fall near that average. With no giant metro, South Carolina leads the nation with people in suburbs and smaller cities. The Iowa and Nevada caucuses are both closed, but both do allow for same-day registration (with Nevada making the switch in 2019). [How do the Iowa caucuses work, and how are they different this year?] In 2016, these early states made up just 3 percent Democratic primary voters.

Source: Washington Post January 31, 2020 18:35 UTC