2 0 1 5 ▁parliament ary ▁election , ▁Pet rov ' s ▁Most ▁party ▁went ▁national ▁and ▁was ▁joined ▁by ▁independent ▁local ▁polit icians ▁from ▁other ▁parts ▁of ▁the ▁country . ▁Led ▁by ▁Pet rov , ▁the ▁party ▁campaign ed ▁for ▁fis cal ▁responsibility , ▁reduction ▁of ▁government ▁sp ending ▁and ▁public ▁deb t , ▁tax ▁cut s , ▁re forms ▁in ▁the ▁public ▁sector ▁and ▁the ▁reduction ▁of ▁administrative ▁divisions ▁in ▁Cro atia . ▁ ▁Pet rov ' s ▁party ▁turned ▁out ▁the ▁surprise ▁of ▁the ▁election , ▁with ▁ 1 3 . 1 7 % ▁of ▁the ▁votes ▁and ▁ 1 9 ▁seats ▁in ▁the ▁Cro at ian ▁Parliament ▁( S abor ). ▁The ▁party ▁had ▁a ▁cru cial ▁role ▁in ▁forming ▁the ▁new ▁government ▁and ▁started ▁negoti ations ▁with ▁the ▁r uling ▁centre - left ▁Cro atia ▁is ▁G row ing ▁coal ition , ▁cent red ▁around ▁the ▁Social ▁Democratic ▁Party ▁of ▁Cro atia ▁( SD P ), ▁and ▁the ▁opposition ▁centre - right ▁Patri otic ▁Co al ition , ▁cent red ▁around ▁the ▁Cro at ian ▁Democratic ▁Union ▁( HD Z ). ▁M embers ▁of ▁the ▁party ▁said ▁that ▁they ▁won ’ t ▁join ▁any ▁of ▁the ▁two ▁coal itions ▁in ▁forming ▁the ▁new ▁government ▁unless ▁their ▁reform ▁ag enda ▁is ▁adopted . ▁After ▁more ▁than ▁ 4 0 ▁days ▁of ▁negoti ations ▁and ▁numerous ▁tw ists , ▁Most ▁decided ▁to ▁give ▁its ▁support ▁to ▁a ▁government ▁led ▁by ▁the ▁HD Z , ▁giving ▁them ▁a ▁sl im ▁majority