The deadline to register to vote in the November 2026 general election in Harris County is Monday, October 5, 2026, according to the Harris County Tax Office, which serves as the county’s voter registrar.
The county marked National Voter Registration Day on Tuesday, September 15, the last day of a registration drive that ran September 8 through 15 at sites across Harris County. Northeast county locations on the calendar included the Alexander Deussen Senior Center, San Jacinto College North Campus and Lone Star College-Houston North Fallbrook. The tax office calendar listed no dedicated sites in Humble, Kingwood or Atascocita, though residents of those communities can register online or by mail through the tax office rather than in person.
