However, the survey indicates the likelihood of voters heading to the polls declines if their state decided to only rely on one of the aforementioned options, though the drop is more pronounced for high-tech methods. While 85 percent of voters overall said they were likely to vote in the 2020 presidential elections, that number drops to 70 percent if they could only cast their votes via an electronic voting machine that provided paper receipts. Forty-six percent said the same about voting only through a mobile app and 44 percent about blockchain-enabled systems.
While voters are more likely to trust systems that at least have a paper-based backup, roughly 30 percent of states in 2018 used electronic voting machines that don’t provide a paper receipt in at least one jurisdiction, according to a June study by the U.S. Election Assistance Commission, which said almost 40 percent of states have electronic voting machines that also record votes on paper.
Six of the remaining Democratic presidential candidates, including Sens. Bernie Sanders (I-Vt.) and Elizabeth Warren (D-Mass.) have put out plans to require that states use paper ballots.