Errors in Iowa's felon list led to rejected ballots in 2016

DES MOINES, Iowa (AP) — Errors in Iowa's list of felons cost at least 20 people the right to vote in November's midterm elections, and officials have known about problems in the list since 2012, according to a newspaper investigation of six counties' records.

The list of roughly 69,000 people who aren't allowed to vote wrongly includes some people who were charged but not convicted of a felony and some who received a deferred judgment, which means their records were expunged after they completed probation, the Des Moines Register reported .
The American Civil Liberties Union, NAACP and other civil rights groups say they are worried.