▁turn , ▁ens ured ▁L DP ' s ▁g rip ▁on ▁power . ▁Additionally , ▁the ▁village ▁association ▁( bur aku ka i ) ▁can ▁deliver ▁b loc ▁votes ▁to ▁conserv ative ▁candidates . ▁ ▁Dem obil ization ▁of ▁soldiers , ▁w art ime ▁destruction ▁of ▁industry ▁and ▁rep atri ation ▁of ▁Japanese ▁from ▁Man ch uria ▁had ▁sw elled ▁the ▁rural ▁population , ▁but ▁the ▁later ▁flight ▁from ▁the ▁coun tr ys ide ▁to ▁cities ▁due ▁to ▁industrial ization ▁meant ▁that ▁the ▁votes ▁of ▁urban ▁constitu ency ▁decl ined ▁compar atively ▁in ▁value ▁without ▁elect oral ▁red ist ribution . ▁ ▁The ▁weight ▁of ▁the ▁rural ▁vote ▁was ▁ex agger ated ▁due ▁to ▁the ▁drawing ▁of ▁elect oral ▁districts . ▁The ▁elect oral ▁districts ▁up ▁to ▁ 1 9 9 3 ▁were ▁drawn ▁in ▁the ▁immediate ▁post war ▁period ▁and ▁had ▁not ▁red ra wn ▁since . ▁The ▁Diet ▁had ▁only ▁made ▁some ▁minor ▁adjust ments ▁in ▁the ▁past , ▁adding ▁a ▁few ▁seats ▁in ▁urban ▁areas ▁and ▁reducing ▁some ▁rural ▁ones . ▁Since ▁ 1 9 6 4 , ▁vot ers ▁in ▁urban ▁constitu encies ▁had ▁file d ▁ 1 0 ▁law su its ▁seeking ▁fair er ▁distribution ▁of ▁Diet ▁seats . ▁The ▁Supreme ▁Court ▁declared ▁“ const itution al ” ▁the ▁ 5 . 8 5 - to - 1 ▁dispar ity ▁in ▁the ▁ 1 9 8 6 ▁election , ▁but ▁it ▁ruled ▁the ▁ 6 . 5 9 - to - 1 ▁ratio ▁in ▁the ▁ 1 9