Resources

This paper provides an empirical analysis of 2020 election audits showing very small changes in presidential vote counts across audited jurisdictions and contest types.

This brief provides a current overview of post-election tabulation audits, state requirements, audit types, and policy considerations.

This paper introduces Bayesian/low-variance risk limiting audit approaches using marginal mark recording to reduce variability and sample requirements.

This issue brief explains the distinct purposes of audits and recounts and how both can contribute to confidence in election outcomes.

This brief explains risk limiting audits, how they differ from fixed-percentage audits, and state adoption trends.

Academic paper examining the use of audits following elections to improve voter confidence.

In this paper, authors use Orange County, California data to demonstrate efficient audit strategies for many contests and shows how contest selection by discrepancy can reduce workload.

In this paper, authors present ALPHA, a flexible risk limiting audit method that can handle sampling without replacement and stratification while learning from audited ballots.

This paper shows how reporting data at the ballot-card level can reduce risk limiting audits sample sizes and improve audit efficiency.

In this paper, authors argue that risk limiting audits can verify tabulation of paper records but cannot by themselves ensure ballot marking device printouts reflect voter intent if voters do not verify them.

In this resource, Verified Voting explains why post-election audits of paper ballots provide evidence for election outcomes and opportunities to correct outcomes when needed.

This paper, recommends voter-verifiable paper ballots and routine audits of paper ballots to verify tabulation and detect compromised systems.