Terry Lamphier of Grass Valley will run against incumbent John Spencer for the District 3 Supervisor’s race.
The deadline to enter races for the June election is the end of this week.
Lamphier and Spencer are politically opposed on nearly all issues, so it will be a closely watched, contentious race.
District 3 is evenly split among Democrats and Republicans, and more than 60 percent of residents vote by mail.
Lamphier is a licensed contractor.
A list of candidates is here.