pewresearch.org/politics/2026/10/20/how-u-s-voters-view-mail-and-absentee-balloting How U.S. Voters View Mail and Absentee Balloting
Republican House supporters who vote by mail are far more confident that mail ballots will be counted as intended (67%) than Republican supporters who vote in person (36%). Democratic supporters show the same split, 78% among mail voters against 58% among in-person voters, in a Pew survey of 3,917 registered voters.
— via Pew Research, Reem Nadeem