Section 10703 Of Chapter 1. Nomination Of Candidates For Legislative And Congressional Offices At Special Elections From California Elections Code >> Division 10. >> Part 6. >> Chapter 1.

. (a) A special election to fill a vacancy in the office of Representative in Congress, State Senator, or Member of the Assembly shall be conducted on a Tuesday at least 126 days, but not more than 140 days, following the issuance of an election proclamation by the Governor pursuant to Section 1773 of the Government Code, except that the special election may be conducted within 180 days following the proclamation in order that the election or the primary election may be consolidated with the next regularly scheduled statewide election or local election occurring wholly or partially within the same territory in which the vacancy exists, provided that the voters eligible to vote in the local election comprise at least 50 percent of all the voters eligible to vote on the vacancy.
  (b) Except as provided in Chapter 3 (commencing with Section 10730), a special election or a primary election may not be conducted on the day after a state holiday.
  (c) (1) A special election described in this section may be conducted as an all-mailed ballot election pursuant to Section 4000.5.
  (2) This subdivision shall remain in effect only until January 1, 2020, and as of that date is repealed, unless a later enacted statute, that is enacted before January 1, 2020, deletes or extends that date.