Whakaotihia te rerenga e whai ake nei: I haere tonu a Kosor hei tangata motuhake, he nui ake te rerenga, he kaitōrangapū, a, i te mutunga, i hangaia he karapu kaitohutohu me nga mema tuarua o te Croatian Civic Party. I pōti a Kosor i te whakatakoto i te take o te
2013 referendum on banning same-sex marriage before the Constitutional Court, and against the proposed Constitutional change which represented a change from her previous position on homosexuality and same-sex marriage since she had been known for being against the expansion of LGBT rights. Ko te whakataunga o te Kooti Ture i te 2013 mo te aukati i te marenatanga o te ira tangata kotahi, me te whakahe ki te whakarerekētanga o te Ture e tohu ana i te whakarerekētanga mai i tana tuunga o mua mo te taatai me te marenatanga o te ira tangata kotahi, i te mea i mohiotia ia mo te whakaeke i nga mana LGBT. I pooti hoki ia mo te Ture mo te Whakahoahoa Ora i hoatu ai ki nga tokorua takirua i Croatia nga tika e rite ana ki nga tokorua takirua takirua. I muri i te whiunga o te mate i te 2015, i whakawhiwhia a Kosor ki te tiaki pirihimana. Whai muri i te whakapae ka taea pea e ia te kaitono a te SDP, ka whakatau a Kosor ki te whai waahi ki te pooti paremata 2015 hei kaitono mo te roopu whaainga angitu o Croatia i te rohe pooti 5. Kāore ia i kōwhiria ki te Pāremata. I haere tonu ia ki te whakahe i a Tomislav Karamarko me Kolinda Grabar-Kitarović me te roopu Bridge of Independent Lists mo to raatau kore whakatau. I te Hui-tanguru 2016, i karanga ia ki te Pirimia Tihomir Orešković ki te tango i a Zlatko Hasanbegović mai i te tuunga Minita o te Ahurea i muri i te whakaahua o ia e mau ana i te potae me te tohu Ustaše i whakaputaina. I te marama o Akuhata 2016, i kii a Kosor ko te hamama i a Za dom spremni "he whakahawea ki nga hoia whawhai me o raatau hoa i tuku i o raatau oranga mo te Croatia manapori, motuhake, me te koreutu".