This article by Hansi Lo Wang is published by NPR. Here is an excerpt:

Prisoners are among the country’s least powerful people. But every 10 years, where they’re counted in census numbers can shift political power in the United States.

And as mapmakers turn last year’s census tallies of incarcerated people and other U.S. residents into the next decade’s voting districts, 11 states are trying to block what critics call “prison gerrymandering.”

That little-known practice involves determining the areas elected officials represent with census numbers that count prisoners as residents of where they are incarcerated. With those tallies, some redistricting officials have created local voting districts filled mostly with people who are locked behind bars and, in most states, cannot vote.

Read the full article here. You can also see more on this subject at either the Democracy Chronicles felon voting archive or African-American Voting Rights. Also, see our main section on American Democracy and our Voter Access articles focusing more broadly on the ease of voting and the various barriers in the way.