. ▁ ▁Political ▁career ▁Pet rov ▁began ▁his ▁political ▁career ▁as ▁an ▁independent ▁candidate ▁in ▁the ▁ 2 0 1 1 ▁parliament ary ▁election ▁on ▁the ▁list ▁of ▁the ▁conserv ative ▁Cro at ian ▁G row th ▁( H r ast ) ▁party . ▁He ▁eventually ▁ended ▁his ▁collaboration ▁with ▁Hr ast ▁because ▁" they ▁bet rayed ▁its ▁members ▁and ▁s ided ▁with ▁the ▁HD Z ", ▁which ▁he ▁didn ' t ▁appro ve . ▁ ▁On ▁ 1 7 ▁November ▁ 2 0 1 2 , ▁Pet rov ▁and ▁other ▁local ▁polit icians ▁and ▁activ ists ▁life ▁founded ▁the ▁Bridge ▁of ▁Independent ▁List s ▁( M ost ) ▁as ▁a ▁regional ist ▁political ▁platform ▁and ▁was ▁chosen ▁as ▁its ▁first ▁president . ▁ ▁In ▁ 2 0 1 3 , ▁the ▁Bridge ▁of ▁Independent ▁List s ▁participated ▁in ▁the ▁local ▁elections ▁in ▁the ▁town ▁of ▁Met k ović . ▁The ▁party ▁won ▁ 4 6 . 2 5 % ▁of ▁votes , ▁and ▁ 9 ▁out ▁of ▁ 1 7 ▁seats ▁in ▁the ▁City ▁Council . ▁Bo ž o ▁Pet rov ▁won ▁ 4 5 . 7 8 % ▁of ▁the ▁votes ▁and ▁entered ▁the ▁second ▁round ▁of ▁elections ▁for ▁the ▁Mayor ▁against ▁St ipe ▁Gab ri ć ▁Jam bo , ▁inc umb ent ▁mayor ▁since ▁ 1 9 9 7 . ▁In ▁the ▁second ▁round ▁Pet rov ▁won ▁with ▁ 6 7 . 9 4 % ▁of ▁the ▁votes ▁and ▁became ▁the ▁mayor ▁of ▁Met k ović . ▁At ▁the ▁same