Resources

Authors collect data from 1996-2018 on all three U.S. states who implemented universal vote-by-mail in a staggered fashion across counties, allowing us to use a difference-in-differences design at the county level to estimate causal effects. They find that: (1) universal vote-by-mail does not appear to affect either party's share of turnout; (2) universal vote-by-mail does not appear to increase either party's vote share; and (3) universal vote-by-mail modestly increases overall average turnout rates, in line with previous estimates.

In this report, Morrell guides jurisdictions through planning and conducting risk limiting audits pilots, including stakeholder preparation, logistics, and post-pilot evaluation.

Since the passage of the Military and Overseas Voter Empowerment of 2009, many technology solutions have been developed to help UOCAVA voters request, receive and return their ballots. This report examines the preliminary and current landscape of these technology solutions and identifies barriers to ensuring their sustainability. The report also identifies areas of further research related to emerging UOCAVA balloting solutions.

Examining two states that have conducted a staggered rollout of mandatory vote-by-mail (Washington and Utah), this research finds that mandatory vote-by-mail slightly increases voter turnout but has no effect on election outcomes at various levels of government.

In this research, voters were randomly assigned to either an in-person or absentee voting condition. Participants assigned to the absentee condition expressed lower levels of confidence that their votes would be counted correctly than those assigned to the in-person voting condition. Voters who had to ask for assistance during the experiment also reported lower levels of confidence.

This research finds that expanding universal vote-by-mail has not dramatically advantaged either party historically.

This study of California focuses on (1) vote-by-mail signature verification processes and (2) notice and remedy procedures for unverified signatures.

This research tests four explanations for how vote by mail voters choose to return their ballot, including the social rewards of voting, the costs of voting, trust in U.S. Postal Service and a preference to cast a ballot after campaigning ends. It finds supporting evidence for each explanation conditioned by prior history of voting.

This report evaluates possible risk limiting audit (RLA) methods for Rhode Island's statutory RLA program and recommends practical implementation approaches.

This report provides a step-by-step workbook for officials planning and conducting a ballot-comparison risk limiting audits, including planning templates and operational considerations.

This report provides a plain-language guide explaining what risk limiting audits are, why they matter, and how election officials can evaluate adoption.

Verified Voting maintains and publicly available, searchable database documenting state laws, regulations, and procedures for post-election audits across U.S. jurisdictions.