HARRIS COUNTY, Texas (KTRK) -- Beware if you received a mail-in ballot application recently from the Voter Participation Center. "This week, the Voter Participation Center (VPC) and Center for Voter Information (CVI) began to send vote-by-mail applications to 87,049 Texas residents aged 65 and older. We are aware of an error in the identification section of these mailings, where there are just four boxes for the recipient to enter their Driver's License, Texas Identification Card, or Election Identification Certificate number, rather than eight.