ck ett ▁Gib son ) ▁was ▁challeng ed ▁on ▁the ▁basis ▁that ▁Arch ib ald ▁was ▁' not ▁of ▁sound ▁mind ' ▁and ▁therefore ▁in el ig ible ▁to ▁be ▁a ▁candidate ; ▁Arch ib ald ▁had ▁previously ▁been ▁cert ified ▁in ▁January ▁ 1 9 5 8 ▁when ▁he ▁had ▁sought ▁treatment ▁for ▁mental ▁health ▁issues ; ▁although ▁he ▁had ▁returned ▁to ▁normal ▁life , ▁the ▁certificate ▁had ▁not ▁been ▁cancel led ▁due ▁to ▁an ▁o vers ight . ▁Following ▁the ▁issue ▁being ▁raised ▁by ▁the ▁ch allen ger , ▁the ▁certificate ▁was ▁cancel led ▁on ▁ 1 1 ▁June . ▁ ▁Although ▁the ▁pet ition ▁was ▁initially ▁dismiss ed ▁as ▁having ▁been ▁lod ged ▁outside ▁the ▁required ▁time ▁limit , ▁in ▁August ▁the ▁Att orney ▁General ▁asked ▁the ▁Supreme ▁Court ▁to ▁declare ▁the ▁seat ▁vac ant . ▁This ▁was ▁done ▁by ▁the ▁Act ing ▁Chief ▁Justice ▁on ▁ 2 6 ▁August , ▁and ▁a ▁by - e lection ▁was ▁called ▁for ▁November . ▁Arch ib ald ▁went ▁on ▁to ▁defeat ▁Gib son ▁by ▁ 3 9 9 ▁votes ▁to ▁ 3 0 1 ▁in ▁the ▁by - e lection , ▁and ▁was ▁read m itted ▁to ▁the ▁Legisl ative ▁Council . ▁ ▁Following ▁the ▁death ▁of ▁Eastern ▁F ij ian ▁M LC ▁Rav u ama ▁V un ival u ▁in ▁April ▁ 1 9 6 4 , ▁Jos ua ▁Rab uka wa qa ▁was ▁elected ▁as ▁his ▁replacement . ▁ ▁New ▁Executive ▁Council ▁In ▁July ▁ 1 9 6 4 ▁a