No person shall be entitled to vote at an election for the purpose of raising the authorized maximum levy or the ratification of contracts by a flood control district, or for any other purpose in connection with said district, unless at the time of the election he is:
(1) An elector within the meaning of article 6, section 2, of the Constitution of the state of Idaho; and
(2) A resident within the district for a period of thirty (30) or more days next preceding the election.