Member of the National Assembly

Sedlar received the 202nd position on the electoral list of G17 Plus in the 2007 Serbian parliamentary election.^[2] The list won nineteen seats, and she was not awarded a mandate. (From 2000 to 2011, parliamentary mandates in Serbian elections were awarded at the discretion of successful parties or alliances, and it was common practice for mandates to be assigned out of numerical order. Sedlar's position on the list – which was in any event mostly alphabetical – had no bearing on whether or not she received a mandate.)

G17 Plus contested the 2008 parliamentary election as part of the Democratic Party's For a European Serbia list, and Sedlar received the 191st position.^[3] She was not initially awarded a mandate, but she was able to enter the assembly as the replacement for another party member on 16 July 2008, after G17 Plus entered the government of Serbia.^[4] She served in the assembly as a supporter of the administration for the next four years. In May 2010, she was elected to the presidency of G17 Plus in Vojvodina.^[5]

Serbia's electoral system was reformed in 2011, such that mandates were awarded to candidates on successful lists in numerical order. G17 Plus contested the 2012 parliamentary election as part of the United Regions of Serbia alliance, and Sedlar received the fifty-first position on their list.^[6] The United Regions of Serbia won sixteen mandates, and she was not returned. She subsequently left G17 Plus and joined the Progressive Party.

Municipal politics

Sedlar has served a number of terms in the Odžaci municipal assembly. In 2011, she chosen as speaker of the assembly. She was given the third position on the Progressive Party's list for Odžaci in the 2013 Serbian local elections^[7] and was re-elected when the list won sixteen mandates.^[8] She did not seek re-election in 2017.

Assembly of Vojvodina

Sedlar contested the 2012 Vojvodina provincial election as a United Regions of Serbia candidate in the Odžaci constituency and was defeated.

Vojvodina switched to a system of full proportional representation for the 2016 provincial election. Sedlar received the thirteenth position on the Progressive Party's list and was elected when the list won a majority victory with sixty-three mandates.^[9] She was chosen as a vice-president of the assembly following the election and held this role for the next four years. She was also appointed as director of the provincial employment service of Serbia's National Employment Service on 8 July 2017.^[10]

She was promoted to the third position on the Progressive list for the 2020 provincial election and was elected to a second term when the list won an increased majority with seventy-six seats.^[11] She is now a member of the assembly committee on regulations and the committee on economy.^[12]

Provincial (Vojvodina)