California Code, Corporations Code - CORP § 700

(a) Except as provided in Section 708 and except as may be otherwise provided in the articles, each outstanding share, regardless of class, shall be entitled to one vote on each matter submitted to a vote of shareholders.

(b) Any holder of shares entitled to vote on any matter may vote part of the shares in favor of the proposal and refrain from voting the remaining shares or vote them against the proposal, other than elections to office, but, if the shareholder fails to specify the number of shares such shareholder is voting affirmatively, it will be conclusively presumed that the shareholder's approving vote is with respect to all shares such shareholder is entitled to vote.