8 Texas counties list more voters than residents

8 Texas counties list more voters than residents - Watchdog.org:
"No law prevents localities from having more registered voters than voting-age residents, and eight Texas counties do.
...Now a vote-watch group accuses the counties of violating the National Voting Rights Act by failing to purge dead, duplicate and ineligible voters.
The counties — Loving, Brooks, McMullen, Roberts, Irion, Jim Hogg, Culberson and Polk — list a combined 52,298 registered voters.
But the latest U.S. Census data show only 49,457 voting-age residents in those counties.