Local elections in Serbia were held on 28 March 2021 in the municipalities of Zaječar, Kosjerić and Preševo, and on 17 October in Mionica and Negotin.

Physical attacks towards opposition activists in Negotin sparked media attention, while the People's Party claimed that electoral irregularities took place at voting stations.

[1] An opposition civic group named "Movement for Krajina", led by Boško Ničić, won the election in Zaječar with 31.9 percent of the popular vote, while the Serbian Progressive Party-led (SNS) list placed second with 30.82 percent of popular vote.

[5][6] Preševo, a municipality in which Albanians make a majority of the population,[7] experienced political crisis between 2017 and 2021.

[8] The crisis began in September 2017, when the local city council was replaced by a temporary body led by the president of the Municipality of Preševo, Shqiprim Arifi.

[17] In December 2020, the local city council was dissolved again and a temporary body was introduced because there were no sessions held since 27 August.

An electoral list could be declined, after which those who had submitted can fix the deficiencies in a span of 48 hours, or rejected, if the person is not authorised to nominate candidates.

[21] Ivica Dačić, the president of the National Assembly, called the elections in Zaječar, Kosjerić, and Preševo on 5 February 2021.

[28][29] During the last election week, prime minister Ana Brnabić and president Aleksandar Vučić both visited Zaječar.

[30] Ministers Darija Kisić Tepavčević and Branislav Nedimović also visited the town during the campaign period.

[38][39] Several high officials were spotted during the election campaigns, such as Ivica Dačić and the finance minister Siniša Mali.

[40][41] On 9 March, a basketball club was offered a donation by SNS, but they declined it and described it as a "cheap election propaganda".

[48] Incumbent mayor Žarko Đokić of the Serbian Progressive Party was chosen for a new term in office after the election.

[50] Seven Serb parties, led by SNS, declared a common electoral list in early March 2021.

[57][58] SPS decided to cooperate with the Serbian Radical Party (SRS) to form a common list which was submitted on 29 September.

[59] Besides these lists, ZS and two civic groups, the "Free Citizens of Mionica" and "Democracy on the old place", participated in the local election.

[60] During the election campaign, environmental protection minister Irena Vujović and Momirović were spotted in Mionica.

[64][65] Incumbent mayor Boban Janković of the Progressives was confirmed for another term in office after the election.

[70] Jeremić also stated that "the decision wasn't made easy" and that the upcoming election will be an "experiment" regarding the electoral conditions.

[77] PUPS formally submitted their ballot list on 18 September, although they weren't able to qualify because 245 signatures were missing.