California Code, Elections Code - ELEC § 7411

(a) Any member of a committee, other than an ex officio member, who misses four regularly called meetings within one 12-month period shall be removed from the committee concerned, unless his or her absence is caused by illness or temporary absence from the county on the date of the meeting.

(b) A committee may, in its sole discretion and in accordance with its bylaws, remove a member who misses four or more regularly called meetings within one 12-month period, regardless of the reasons for the absences.