MIchael W. Sances (Temple University) has a new article, In-Person Voting Increases Turnout Among Incarcerated Persons: Evidence From the Cook County Jail in the Election Law Journal.

The vast majority of persons incarcerated in jails are eligible to vote, but only via absentee ballot. . . . . I examine the case of the Cook County Jail, which in 2020 became one of the few jurisdictions to allow incarcerated persons to vote in-person. Using data on the ballots cast from jail, I compare the turnout between incarcerated and nonincarcerated Cook County voters, before and after the reform. I show that the reform increased the turnout between 7 and 33 percentage points depending on the election or between 170% and 440% over pre-reform baselines. These findings are not driven by fluctuations in the jail population due to the pandemic or state and local bail reforms, as excluding elections affected by these events yields similar results. . . .