Higher Turnout Might Not Help Democrats as Much as It Seems

Would additional voters in 2020 be more or less likely to approve of Mr. Trump? Based on data from 2018, it seems the answer would be different in the Rust Belt and the Sun Belt, giving neither party a clear advantage.

Source: Upshot analysis of data from the Pew Research Center, Kaiser Family Foundation, Roper Center, U.S. Census Bureau, L2 voter file, and New York Times/Siena College surveys. Rust Belt includes Wis., Minn., Pa.., Mich.; Sun Belt includes Tex., Ga., Fla., Nev., Ariz.