In this explainer, Bipartisan Policy Center and National Vote at Home Institute focus on the states that allow election workers to run ballots through scanners before Election Day. This policy provides the most preparation for tabulation, which occurs after polls close on Election Day and before the release of unofficial results. By understanding the benefits of this policy along with other ballot pre-election processes (ranging from verifying signatures to curing ballots), policymakers can expedite the release of unofficial election night returns, mitigating the harmful impacts of election mis- and disinformation.