. ▁ ▁Second ▁D á il ▁In ▁May ▁ 1 9 2 1 , ▁D á il ▁É ire ann , ▁the ▁parliament ▁of ▁the ▁self - dec la red ▁Irish ▁Republic ▁run ▁by ▁S inn ▁F é in , ▁passed ▁a ▁resolution ▁declaring ▁that ▁elections ▁to ▁the ▁House ▁of ▁Commons ▁of ▁Northern ▁Ireland ▁and ▁the ▁House ▁of ▁Commons ▁of ▁Southern ▁Ireland ▁would ▁be ▁used ▁as ▁the ▁election ▁for ▁the ▁Second ▁D á il . ▁All ▁those ▁elected ▁were ▁on ▁the ▁roll ▁of ▁the ▁Second ▁D á il , ▁but ▁as ▁no ▁S inn ▁F é in ▁MP ▁was ▁elected ▁for ▁B elf ast ▁North , ▁it ▁was ▁not ▁represented ▁there . ▁ ▁Polit ics ▁ ▁B elf ast ▁North ▁was ▁a ▁pre domin antly ▁Union ist ▁area ▁with ▁considerable ▁po ckets ▁of ▁labour ▁strength . ▁ ▁It ▁returned ▁four ▁Union ists ▁in ▁ 1 9 2 1 , ▁but ▁in ▁ 1 9 2 5 , ▁it ▁returned ▁only ▁two ▁official ▁Union ists , ▁plus ▁one ▁independent ▁Union ist ▁and ▁a ▁Labour ▁member . ▁ ▁M embers ▁of ▁Parliament ▁ ▁E lection ▁results ▁ ▁References ▁ ▁Category : N or thern ▁Ireland ▁Parliament ▁constitu encies ▁established ▁in ▁ 1 9 2 1 ▁Category : N or thern ▁Ireland ▁Parliament ▁constitu encies ▁dis est ab lished ▁in ▁ 1 9 2 9 ▁Category : Const itu encies ▁of ▁the ▁Northern ▁Ireland ▁Parliament ▁Category : Const itu encies ▁of ▁the ▁Northern ▁Ireland ▁Parliament ▁in ▁B elf ast ▁Category : D á il ▁constitu encies