▁ 2 0 0 7 ▁B öh ning ▁was ▁the ▁chair person ▁of ▁the ▁Young ▁Social ists ▁in ▁the ▁SP D ▁(" J us os "), ▁the ▁SP D ' s ▁youth ▁organization . ▁ ▁Early ▁life ▁and ▁educ ations ▁B öh ning ▁grew ▁up ▁in ▁Lü beck . ▁He ▁studied ▁political ▁science ▁at ▁the ▁Otto ▁Su hr ▁Institute ▁( OS I ) ▁of ▁the ▁Free ▁University ▁of ▁Berlin ▁from ▁ 1 9 9 9 ▁until ▁ 2 0 0 4 . ▁ ▁Political ▁career ▁From ▁ 1 5 ▁February ▁ 2 0 0 8 ▁B öh ning ▁served ▁as ▁sp ok esp erson ▁of ▁the ▁" For um ▁Dem okrat ische ▁Lin ke ▁ 2 1 " ▁of ▁the ▁SP D , ▁a ▁group ▁of ▁left - aligned ▁polit icians ▁within ▁the ▁party ; ▁in ▁ 2 0 1 4 , ▁he ▁left ▁the ▁group . ▁He ▁un success fully ▁ran ▁as ▁candidate ▁for ▁the ▁elect oral ▁district ▁of ▁Berlin ▁Friedrich sh ain - K re uz berg ▁– ▁P ren z la uer ▁Berg ▁East ▁in ▁the ▁ 2 0 0 9 ▁national ▁elections . ▁ ▁From ▁December ▁ 2 0 1 1 ▁B öh ning ▁served ▁as ▁Head ▁of ▁the ▁Senate ▁Chan cell ery ▁of ▁the ▁Federal ▁State ▁of ▁Berlin , ▁first ▁under ▁G over ning ▁Mayor ▁Klaus ▁W ow ere it ▁( 2 0 1 1 - 2 0 1 4 ) ▁and ▁later ▁under ▁Michael ▁Müller ▁( 2 0 1 4 - 2 0 1 8 ). ▁In