John Gioia has easily retained his Contra Costa County Board of Supervisors District 1 seat, defeating challenger Hulan Barnett with nearly 85 percent of the vote in Tuesday’s election, according to the unofficial results.

John Gioia, Contra Costa County, Calif., District 1 Supervisor. (Office of John Gioia via Bay City News)

Gioia first won the West County post in 1998. His district includes Richmond, San Pablo, El Cerrito, part of Pinole, and the unincorporated communities of Bayview, East Richmond Heights, El Sobrante, Kensington, Montalvin Manor, Tara Hills, North Richmond, and Rollingwood.

Barnett, a Richmond resident and math teacher at Antioch’s Dallas Ranch Middle School, ran a vocal campaign against Gioia, encouraging followers on social media to show up at Gioia’s campaign events and “raise hell.”

A vocal critic of the pandemic mask mandates — something Gioia supported — Barnett said his priorities were education, affordable housing, and better business development.

Gioia campaigned on his record, which he said included pushing for two county oil refineries to convert to producing clean fuels and a Richmond factory converting to producing clean hydrogen. He also touted his involvement in developing the county’s affordable housing trust fund and helping more people get access to mental health and homeless services.