of the 100 members of the house of assembly, 72 were "common roll" members for whom the electorate was every adult citizen. all of these members were black africans. those on the previous electoral roll of rhodesia (due to education, property and income qualifications for voter rolls, mostly but not only white constituencies) elected 20 members; although this did not actually exclude non-whites, very few black africans met the qualification requirements. a delimitation commission sat in 1978 to determine how to reduce the previous 50 constituencies to 20. the remaining eight seats for old voter role non-constituency members were filled by members chosen by the other 92 members of the house of assembly once their election was complete. in the only election held by zimbabwe rhodesia, bishop abel muzorewa's united african national council (uanc) won a majority in the common-roll seats, while ian smith's rhodesian front (rf) won all of the old voter roll seats. ndabaningi sithole's zimbabwe african national union (zanu) won 12 seats.