Since we officially launched our forecast on Aug. 12 (numbers before that reflect backfill), Arizona is the state where Biden's winning odds have improved the most, from 55% to 67%.
— Nate Silver (@NateSilver538) September 14, 2020
Next after that are MN (↑ from 72 to 83) and WI (↑ from 70 to 78).https://t.co/TdCOi1WkWL pic.twitter.com/ZbAic3GFyu