The United Opposition of Serbia (Serbian Cyrillic: Удружена опозиција Србије, romanized: Udružena opozicija Srbije, abbr.

It positioned itself as a coalition that opposed Aleksandar Vučić and sought to form a "democratic society" and free and fair elections, while it also supported the accession of Serbia to the European Union.

The People's Party (Narodna) opposed this move since PSG had participated in the 2020 parliamentary election, which was boycotted by members of UOPS.

The parties later formed the United for the Victory of Serbia (UZPS) coalition in November 2021, which took part in the 2022 general election.

[14] As a reaction to the formation of UOPS, political parties that were excluded from participating in the coalition held a meeting in late September 2020.

[15] UOPS later criticised the government's approach towards the COVID-19 pandemic, and had stated that it would support the formation of a COVID-19 crisis team if it would include experts on the topic.

[18] In December, SSP and DS had announced that they would form a joint platform for the upcoming inter-party dialogues on electoral conditions with the Movement of Free Citizens (PSG).

[9] Zoran Lutovac, president of the Democratic Party, had stated that the coalition would include options from the left to the right to "articulate the dissatisfaction that exists in Serbia".

[12] Following the 2020 parliamentary election in Montenegro, the coalition had congratulated the opposition for its victory, and had hoped that they would form good relations with the newly-elected government.