(2) At the same election at which the question of increasing the board from three to five members is voted upon, the electors shall vote for a number of candidates:
(a) To fill any vacancy;
(b) To elect a successor to any position the term of which expires June 30 next following the election; and
(c) To elect two candidates to fill the two new board positions if the board membership is increased.
(3) If the board membership is increased under this section, the Secretary of State by rule shall adjust and stagger the terms of the board members elected at the election under this section as necessary so that at least two board members are elected at each subsequent regular district election. [1955 c.442 §5; 1971 c.647 §85; 1983 c.350 §265]