Voter registration deadline for local elections is Friday The Daily Ardmoreite On Tuesday, April 6 voters across Carter County will be heading to the polls to vote in local elections. The deadline for voter registration is this Friday, March 12 for those who are not yet registered. Friday will also be the deadline for registered voters to update their voter information. Voters in Oklahoma have two options to get registered. Carter County residents can register in person at the Carter County Election Board located at 25 A St. NW, Suite 100 or online at oklahoma.gov/elections. Perspective voters will need to provide their name, date of birth, and street address as well as either their driver’s license number or the last four digits of their social security number.