Section 9068 Of Article 6. Arguments Concerning Measures Submitted To Voters From California Elections Code >> Division 9. >> Chapter 1. >> Article 6.

. (a) No more than three signatures shall appear with any argument printed in the ballot pamphlet. In case any argument is signed by more than three persons the signatures of the first three shall be printed.
  (b) The Secretary of State shall provide, upon request, the name of, and a telephone number for, each signer of a ballot argument printed in the ballot pamphlet.