(2) Subject to ORS 478.225, the directors may be elected in one of the following methods or a combination of both:
(a) Elected by electors of subdistricts.
(b) Elected at large by position number by the electors of the district. [1957 s.s. c.10 §7 (enacted in lieu of 478.220); 1969 c.667 §§13,66; 1969 c.669 §12; 1971 c.647 §111; 1973 c.796 §68; 1975 c.647 §44; 1979 c.364 §6; 1983 c.350 §285]