California Code, Elections Code - ELEC § 7201.2

(a) Notwithstanding any other provision of law, in the County of Alameda, the elected members of the county central committee shall be elected by Assembly districts and the number to be elected from any Assembly district shall be determined as follows: There shall be taken the number of votes cast in that portion of the Assembly district lying within the County of Alameda at the last gubernatorial election for that party's candidate for Governor, or, if the party had no candidate for Governor, for the candidate of the party voted on throughout the state who received the greatest number of votes and who was the candidate of that party alone. This number shall be divided by one-thirtieth of the number of votes cast in the county for Governor or, where the party had no candidate for Governor, for the candidate mentioned above. The integer next larger than the quotient obtained by that division shall constitute the number of members of the committee to be elected by that party in that Assembly district.

(b) If the procedure described above would result in less than 30 members being elected for any committee, the number of votes cast for this party's candidate in that portion of each Assembly district lying within the County of Alameda shall be divided by an amount sufficiently smaller than one-thirtieth of the votes cast for Governor in the county as to give a membership in the committee equal to or the nearest amount that is greater than 30 members.

Only a person who is a resident of the county may vote for a candidate for membership to the county central committee and may vote only for candidates seeking to represent the Assembly district in which the voter resides.