[US Democratic primaries: Number of states (including DC) won by Joe Biden to be] 1 to 10

Created by Cato on 2019-11-22; known on 2020-08-21; judged wrong by Cato on 2020-03-16.

• Cato estimated 11% on 2019-11-22
• pranomostro estimated 35% on 2019-12-02
• Cato estimated 8% on 2019-12-03
• Cato estimated 0% on 2019-12-26
• Cato estimated 0% on 2019-12-26
• Bruno Parga estimated 1% on 2020-01-04
• Cato   judged this prediction wrong on 2020-03-16.
• Cato changed the deadline from “on 2020-06-02” on 2020-05-28