Early life and career
Nikolić was born in Sokobanja, then part of the Socialist Republic of Serbia in the Socialist Federal Republic of Yugoslavia. He graduated from the University of Niš Faculty of Sport and Physical Education and subsequently became a professor in the same department. He is the president of the Democratic Party's municipal committee in Sokobanja.
Nikolić was first elected to the National Assembly in the 2008 Serbian parliamentary election. He received the 149th position on the Democratic Party's For a European Serbia electoral list and was included in the Democratic Party's assembly delegation when the list won 102 mandates. (From 2000 to 2011, parliamentary mandates were awarded to sponsoring parties or coalitions rather than to individual candidates, and it was common practice for the mandates to be distributed out of numerical order. Nikolić's relatively low position on the list, which was in any event mostly alphabetical, had no bearing on his selection to serve in the assembly.) The Democratic Party became the dominant force in a new coalition government that was formed after the election, and Nikolić served as part of its parliamentary majority. In 2009, he hosted members of the Ohio Army National Guard in a local basketball tournament in Sokobanja.
Serbia's electoral system was reformed in 2011, such that parliamentary mandates were awarded in numerical order to candidates on successful lists. Nikolić received the forty-sixth position on the Democratic Party's Choice for a Better Life list in the 2012 parliamentary election and was re-elected when the list won sixty-seven mandates. The Serbian Progressive Party and the Socialist Party of Serbia formed a new coalition government after the election, and the Democratic Party moved into opposition. In October 2012, Nikolić was elected as a vice-president of the Democratic Party.
Nikolić was promoted to the sixteenth position on the Democratic Party's list in the 2014 election and the fourteenth position in the 2016 election and was re-elected on both occasions, when the party respectively won nineteen and sixteen mandates. The Democratic Party has remained in opposition during this time. Nikolić is the deputy chair of the assembly's environmental protection committee; a member of the committee on the economy, regional development, trade, tourism, and energy; a deputy member of the health and family committee; and a member of the parliamentary friendship groups with Azerbaijan, France, Germany, Italy, Saudi Arabia, the United Kingdom, and the United States of America. He is also a member of an informal environmentalist "green group" in the assembly.
- DEJAN NIKOLIĆ, Otvoreni Parlament, accessed 27 April 2018.
- Избори за народне посланике Народне скупштине одржани 11. маја 2008. године, ИЗБОРНЕ ЛИСТЕ (ЗА ЕВРОПСКУ СРБИЈУ - БОРИС ТАДИЋ), Republika Srbija - Republička izborna komisija, accessed 5 April 2017.
- 11 June 2008 legislature, National Assembly of Serbia, accessed 27 April 2018.
- Serbia's Law on the Election of Representatives (2000) stipulated that parliamentary mandates would be awarded to electoral lists (Article 80) that crossed the electoral threshold (Article 81), that mandates would be given to candidates appearing on the relevant lists (Article 83), and that the submitters of the lists were responsible for selecting their parliamentary delegations within ten days of the final results being published (Article 84). See Law on the Election of Representatives, Official Gazette of the Republic of Serbia, No. 35/2000, made available via LegislationOnline, accessed 28 February 2017.
- "Serbians Provide Warm Welcome to Ohio Troops Helping Restore Schools," Targeted News Service, 25 August 2009.
- Избори за народне посланике Народне скупштине, 6. мај 2012. године, ИЗБОРНЕ ЛИСТЕ (ИЗБОР ЗА БОЉИ ЖИВОТ- БОРИС ТАДИЋ), Republika Srbija - Republička izborna komisija, accessed 26 January 2017.
- Serbian ex-president says Democratic Party not 'business organization'," British Broadcasting Corporation Monitoring European, 29 October 2012 (Source: Blic website, Belgrade, in Serbian 26 Oct 12).
- Избори за народне посланике Народне скупштине одржани 16. и 23. марта 2014. године, ИЗБОРНЕ ЛИСТЕ (СА ДЕМОКРАТСКОМ СТРАНКОМ ЗА ДЕМОКРАТСКУ СРБИЈУ), Republika Srbija - Republička izborna komisija, accessed 30 March 2017.
- Избори за народне посланике 2016. године » Изборне листе (ЗА ПРАВЕДНУ СРБИЈУ – ДЕМОКРАТСКА СТРАНКА (НОВА, ДСХВ, ЗЗС)), Republika Srbija - Republička izborna komisija, accessed 30 March 2017.
- DEJAN NIKOLIC, National Assembly of Serbia, accessed 27 April 2018.
- Dejan Nikolić, Južne Vesti, 5 January 2016, accessed 27 April 2018.