Florida is among the three states with the most severe felony disenfranchisement laws. Florida requires felons to have completed sentencing, parole and/or probation, and then seven years later, to apply individually for restoration of voting privileges. As in other aspects of the criminal justice system, this law has disproportionate effects for minorities. As a result, according to Brent Staples, based on data from The Sentencing Project, the effect of Florida's law is such that in 2014 "[m]ore than one in ten Floridians – and nearly one in four African-American Floridians – are shut out of the polls because of felony convictions."
How does it effect elections 
one in ten Floridians – and nearly one in four African-American Floridians – are shut out of the polls because of felony convictions