Neil Kitchens lived outside the district and used his office address when filing.
Incumbent Robert Rivas and challenger Gregory Swett face off Nov. 3.
Letter sent following reports of COVID-19 cases among farmworkers in District 30.
"We must ensure that California's farmworkers and their children have the chance at a better life, and a brighter future," Rivas said.
In a show of growing interest, residents came to hear from county and state candidates and about the measures. Political forum was almost closed down, but with some rearranging, most were permitted to hear the 27 candidates speak.