In an exploration of the possible effects of restoring voting rights to people with felony records in Florida, Marc Meredith of the School of Arts and Sciences said that “fewer than 20 percent of people with felony records tend to vote,” compared to about 56 percent among the general population.
https://www.wsj.com/articles/florida-to-gain-1-4-million-voters-if-felon-measure-passes-1540891801 The Wall Street Journal