Čojčić has at different times been a member of G17 Plus, the United Regions of Serbia (URS), and the Serbian Progressive Party (SNS).
The Democratic Party (DS) ultimately formed a coalition government that included G17 Plus, and Čojčić was named as deputy president of the assembly.
[7] G17 Plus contested the 2008 Serbian parliamentary election as part of the For a European Serbia (ZES) alliance led by the Democratic Party.
[11] Serbia's electoral laws were reformed in 2011, such that all mandates were awarded to candidates on successful lists in numerical order.
[14] A governing coalition that did not include the URS was established in June 2012, and Čojčić initially served in opposition.
He and entire URS group in the Pećinci assembly joined the SNS in June of the same year.
The coalition government formed in Pećinci in 2012 proved to be unstable, and the local assembly was dissolved in November 2013.