Milanović received the forty-ninth position on the Progressive Party's electoral list in the 2016 Vojvodina provincial election and was elected when the list won a majority victory with sixty-three out of 120 mandates.[2] For the next four years, she served in the assembly as a supporter of the government.
She was given the eighty-first position on the Progressive-led Aleksandar Vučić — For Our Children list in the 2020 provincial election and narrowly missed direct election when the list won seventy-six mandates.[3] She is currently the next in line to receive a mandate if another Progressive Party member leaves the assembly.
Milanović was given the sixth position on the Progressive list for the Pančevo city assembly in the 2016 Serbian local elections and was elected when the list won a majority victory with thirty-nine out of seventy mandates.[4][5] For the 2020 local elections, she was given the eighteenth position and was re-elected when the Progressive list won forty-seven mandates.[6][7]