Section 15303 Of Article 1. General Provisions From California Elections Code >> Division 15. >> Chapter 4. >> Article 1.

. If the returns from any precinct are incomplete, ambiguous, not properly authenticated, or otherwise defective, the elections official may issue and serve subpoenas requiring members of the precinct board to appear and be examined under oath concerning the manner in which votes were counted and the result of the count in their precinct. This section shall apply when ballots are tabulated manually or automatically at the polls.