County clerks in West Virginia are verifying voter addresses as part of the national change of address process.
By state code, counties have to verify the voter's registration record information based on what the U-S Postal Service has.
If voters don't verify the information, it could cause problems.
"If we don't cards get back by September 1, they will go inactive and be eventually taken off the voter's registration list after the general election in 2016," said Debbie Wilfong, Upshur County Clerk.
Wilfong said more than 3,000 voters were sent cards in Upshur County because of changes in the 911 addressing and mapping program.
To verify the information, mail in the card with verified or updated information to your county clerk. If your address has changed, you'll receive a new voter registration card with the updated information.
Again, the deadline to return the cards is September 1.