Voting machines do cause problems, see 2000 presidential election. Best practice appears to be along the lines that CO, OR and WA do, mail human marked paper ba

Voting machines do cause problems, see 2000 presidential election. Best practice appears to be along the lines that CO, OR and WA do, mail human marked paper ballots to every voter, allow in person voting. The paper ballots are both human and machine readable. After a count, human or machine, perform a risk limiting audit. There's a good paper, "A gentle introduction to risk limiting audits", Mark Lindemann and Philip B. Stark, on the topic. This kind of voting increases participation, decreases costs, a win-win. Anybody advocating for in person, same day voting, or using voting machines has not worked through the issues, or wants to suppress voting.