Why Educated Voters Adopt Internet Ballots Even With Small Usage? Switzerland Study Finds Modest Error Reduction

Electronic voting systems are claimed to help voters avoid mistakes leading to uncounted votes. A new study analyzes extended Internet voting trials in Geneva canton, Switzerland (mostly referendum). Using difference-in-differences estimation exploiting federal safety legislation creating a near-natural experiment, it finds that offering online voting option reduced residual vote rates by an average of 0.3 pp overall and up to 0.5 pp for cantonal measures at the ballot bottom.

Data & Methods: Switzerland Geneva Canton Internet Voting Trial (2019-2021)

• Analyzed case study from Switzerland's Geneva canton involving extended Internet voting trials between 2019 and 2021.
• Focus on referendum votes during these trials.

Key Finding:

Internet voting option modestly reduced the rate of avoidable voter mistakes (residual vote rates) by about 0.3 percentage points overall, with a larger effect for cantonal ballot measures at the bottom of the paper ballot.

Voter Adoption & Characteristics: Who Votes Online?

• Average online voting adoption: approx. 20% among eligible voters when offered an option.
• Highest user group: highly educated voters showed strongest preference for Internet voting.

Implications: Despite modest effect sizes and low overall usage, the findings suggest Internet voting technology holds potential to decrease avoidable errors in democratic systems.