From the Summary: "Several states have implemented new election administration processes in response to the COVID-19 [coronavirus disease 2019] pandemic that could affect how and when ballots are counted. Even under normal circumstances, finalizing federal election results takes days or weeks after election day. Among other steps, state, territorial, and local election officials 'canvass' votes to ensure that ballots are valid and counted accurately. Election observers, audits, and other processes are designed to enhance transparency. This report addresses frequently asked questions on these and related subjects. The discussion emphasizes the period between the time a voter casts a ballot and when election officials 'certify', or finalize, the results."
CRS Report for Congress, R46565
Congressional Research Service: https://crsreports.congress.gov/