From the Introduction: "This white paper focuses on one important aspect of managing the redesign of polling place procedures to accommodate the realities of voting amid the pandemic: managing the volume of traffic through a polling place. It discusses how queuing theory can be harnessed to provide guidance about questions such as these:  How many voting booths, check-in stations, and scanners do I need to handle anticipated turnout?  How long are the lines I should anticipate during the day?  If I have to limit the number of people in the room where voting occurs, how many people are likely to be waiting outside to vote?"
Stanford-MIT Healthy Elections Project
MIT Election Data & Science Lab: https://electionlab.mit.edu/