▁ 5 8 % ▁of ▁the ▁Bret ons ▁and ▁ 6 2 % ▁of ▁the ▁inhabitants ▁in ▁Lo ire - At lant ique ▁favour ▁the ▁reun ification . ▁ ▁Political ▁t endencies ▁ ▁Until ▁the ▁end ▁of ▁the ▁ 2 0 th ▁century , ▁Brit t any ▁had ▁been ▁character ised ▁by ▁a ▁strong ▁Catholic ▁and ▁conserv ative ▁influence . ▁However , ▁some ▁areas ▁such ▁as ▁the ▁industrial ▁region ▁around ▁Saint - N az aire ▁and ▁Lor ient ▁and ▁the ▁surr ound ings ▁of ▁Tr ég u ier ▁are ▁traditional ▁Social ist ▁and ▁Commun ist ▁strong holds . ▁Left - wing ▁parties , ▁mainly ▁the ▁Social ist ▁party ▁and ▁the ▁Gre ens , ▁have ▁become ▁more ▁and ▁more ▁powerful ▁after ▁the ▁ 1 9 7 0 s ▁and ▁they ▁have ▁formed ▁a ▁majority ▁in ▁the ▁Regional ▁Council ▁of ▁Brit t any ▁since ▁ 2 0 0 4 . ▁The ▁Lo ire - At lant ique ▁and ▁Il le - et - V ila ine ▁coun c ils ▁have ▁also ▁been ▁held ▁by ▁the ▁left ▁since ▁ 2 0 0 4 . ▁▁ ▁The ▁Social ist ▁party ▁has ▁held ▁the ▁C ô tes - d ' Ar mor ▁council ▁since ▁ 1 9 7 6 , ▁and ▁the ▁Fin ist ère ▁council ▁since ▁ 1 9 9 8 . ▁On ▁its ▁side , ▁Mor b ih an ▁remains ▁a ▁right - wing ▁strong hold . ▁The ▁local ▁parties ▁have ▁a ▁very ▁small ▁audience , ▁except ▁the ▁Union ▁D ém ocrat ique ▁Bre ton ne