YOU CAN PRINT OFF BALLOTS YOURSELF.
A woman named Lori Steele-Contorer (who went to BOWLING GREEN State University) created this company called Everyone Counts, that allegedly creates secure, online voting.
To print off a ballot, all you need to do is put in your birthdate and SS/DOB, then you can just print out your ballot and mail it in. This is only if your state has decided to use Everyone Counts.
But if you had access to the voting registration records, what's stopping you from just going down the list, putting in the required info and then just mailing a bunch of votes?
So far, I found counties in Washington and Colorado using this company, which just got bought by Votem Corp, which does blockchain voting or something.
Sauce:
https:// www.everyonecounts.com/online-voting
https:// xconomy.com/san-diego/2016/09/08/everyone-counts-voting-system-accredited-for-federal-elections-but/
https:// www.bgsu.edu/business/centers-and-institutes/center-for-entrepreneurial-leadership/e-week/entrepreneurial-hall-of-fame/hall-of-fame-inductees/lori-steele-bio.html