Petrović graduated from the University of Belgrade Faculty of Political Sciences and began working at TV Novi Sad in 1981, later becoming editor for its documentary section and editor-in-chief of its news program.
[2] Petrović was fired as editor-in-chief of TV Novi Sad in 1990, at a time when Slobodan Milošević was establishing his authoritarian rule over Serbia.
[3] Petrović joined Yugoslavian prime minister Ante Marković's Union of Reform Forces of Yugoslavia when multi-party politics was re-introduced to Serbia in 1990.
Milošević's Socialist Party of Serbia (SPS) won a majority victory, and Petrović served in opposition when the assembly convened in 1991.
[5] Ultimately, the FRY was not permitted to join the United Nations (UN) due to the insistence by Slobodan Milošević and his allies that it be recognized as the legal successor to the SFRY.
[6] The RDSV contested the 1992 Serbian parliamentary election in the Novi Sad division in an alliance with the Democratic Party (DS), and Petrović appeared in the fourth position on their combined list.
After the first round, the federal election commission ruled that Koštunica had fallen just short of the majority he needed to win outright and avoid a runoff vote with Milošević.
[17] The Reformists later contested the 2004 Serbian local elections as part of the Clean Hands of Novi Sad coalition, which fell just below the threshold.
In 2010, Petrović argued for Vojvodina to be designated as a federal unit within the Republic of Serbia and for the Serbian constitution to be amended to permit this outcome.