State Vote method analyzed Election dates — 2016 Election dates — 2020 Total number of mail-in or absentee ballots — 2016 Total number of mail-in or absentee ballots — 2020 Total number of mail-in or absentee ballots — % change Share of voters using method in 2020 Major party more reliant on method in 2020 Correlation with median household income in 2020
Florida mail-in 03/15/2016 03/17/2020 1,258,732 1,395,524 11% 23% R +**
Georgia mail-in 03/01/2016 06/09/2020 36,208 1,034,762 2758% 51% R +**
Indiana mail-in 05/03/2016 06/02/2020 53,818 546,716 916% 50% +**
Michigan absentee 08/02/2016 08/04/2020 531,478 1,638,617 208% 65% +**
Minnesota absentee 08/09/2016 08/11/2020 41,989 543,169 1194% 59% -
Ohio absentee 03/15/2016 03/17/2020 446,508 1,810,486 305% 99% +
Oklahoma mail-in 06/28/2016 06/30/2020 15,856 95,335 501% 14% D +**
Pennsylvania mail-in 04/26/2016 06/02/2020 *106,854 1,224,215 1046% 42% D +**

*this number represents mail-in ballot APPLICATIONS in PA in 2016, only a portion of which become mail-in votes

**symbols represent statistically significant correlations (p < 0.05)