"Ruling from deeply divided court will free mostly Southern states from seeking federal preclearance for voting changes, or require Congress to intervene."
In other words, these nine states: Arizona, Texas, Missouri, Alabama, Georgia, South Carolina, Virginia, Louisiana., and Alaska. Small parts of California, North Carolina, South Dakota, Florida and N.Y. :(http://www.justice.gov/crt/about/vot/sec_5/covered.php) struck down Section 4 of the Voting Rights act which prevented people from making it unfair or impossible for minority voters to vote. In a historic 5-4 vote, the U.S. Supreme Court got rid of this section in the voting rights act.
http://usat.ly/16x7ooE
http://wapo.st/14uRtpz
http://nyti.ms/120XSq9