District 3 Supervisor Don Horsley was easily re-elected Tuesday to a second four-year term on the San Mateo County Board of Supervisors.
District 3 includes Atherton, Portola Valley, Woodside, parts of Menlo Park and Belmont, San Carlos, and large coastal and unincorporated areas.
Mr. Horsley, an Emerald Hills resident, was a longtime sheriff of San Mateo County.
Michael Stogner, a San Carlos businessman and victim's advocate, ran against Mr. Horsley in 2010, and ran for the District 1 seat in 2011. He has never held public office, but has gained attention in the county as a government watchdog.
This is the first by-district supervisor race, which means only residents of District 3 can choose the district representative.