California Code
ARTICLE 5 - Preparation, Circulation, and Filing of Nomination Papers
Section 6585.

6585. A verified nomination paper is prima facie evidence that the signatures are genuine and that the persons signing it are voters, until it is otherwise proved by comparison of the signatures with the affidavits of registration in the office of the elections official.

(Enacted by Stats. 1994, Ch. 920, Sec. 2.)