Marković was raised in a family of SPS supporters and became a party member in 2013. He was elected as president of the Socialist Youth of Serbia on 17 December 2017.[3][4]
Marković received the eighth position on the Socialist Party's electoral list for the Stari Grad municipal assembly in the 2016 Serbian local elections.[6] The list won four seats; he was not immediately elected but received a mandate on 29 September 2016 as the replacement for another party member.[7][8] He was promoted to the fifth position on the SPS list in the 2020 local elections and was re-elected when the list won six mandates.[9][10] During his time in the municipal assembly, he served on the committee for the implementation of Stari Grad's youth policy.[11] He was not a candidate in the 2024 Serbian local elections.
Parliamentarian
Marković was given the fourth position on the Socialist Party's list in the 2020 Serbian parliamentary election. This was tantamount to election, and he was indeed elected when the list won thirty-two mandates.[12] During the campaign, he highlighted the importance of Serbia's public health system established in the socialist era.[13] The SPS continued its participation in a coalition government led by the Serbian Progressive Party (SNS) after the election, and Marković supported the administration in the assembly.
He was given the third position on the Socialist Party's list in the 2022 parliamentary election and was re-elected when the list won thirty-one seats.[15] He was promoted to chair of the spatial planning committee in the parliament that followed and was also a member of the foreign affairs committee, a deputy member of the economy committee and the security services control committee, again the leader of Serbia's parliamentary friendship group with Suriname, and a member of the friendship groups with Belarus, Bosnia and Herzegovina, Bulgaria, the Caribbean countries,[e]China, Egypt, France, Ireland, Kuwait, Liechtenstein, New Zealand and the Pacific Island countries,[f]Russia, Slovenia, Trinidad and Tobago, and the United Arab Emirates.[16] He was briefly a deputy member of Serbia's delegation to the North Atlantic Treaty Organization (NATO) parliamentary assembly, where Serbia has observer status.[17][18]
Marković received the sixteenth position on the SPS's list in the 2023 parliamentary election and was elected to a third term when the list won eighteen mandates.[19] He currently serves as deputy leader of the Socialist Party's parliamentary group and is the chair of the spatial planning committee, a deputy member of the foreign affairs committee and the security services control committee, a member of the working group for the improvement of the electoral process, the head of Serbia's parliamentary friendship group with the Comoros, and a member of the friendship groups with Bahrain, Bosnia and Herzegovina, Bulgaria, China, Cuba, Greece, Hungary, Mali, Russia, and South Korea, as well as the group with Australia, New Zealand, and the Pacific Island countries.[20]