The Brazilian electoral system is designed around political parties, which are responsible for candidate registration. This structure is supported by the Political Parties Law and the Electoral Code, which emphasize the necessity of party affiliation. In 2015, electoral reforms explicitly prohibited independent candidacies, highlighting a clear legislative intent.
Political parties in Brazil are seen as essential for ensuring governability, as they form coalitions and negotiate with the executive branch. The institutional design does not accommodate independent candidates, as parties mediate between candidates and voters, providing stability and predictability in elections.
Discussions on allowing independent candidates often arise during representational crises. Critics argue that the current system limits political diversity and fails to represent societal needs. However, even if independent candidacies were permitted, experts suggest these individuals would likely align with existing political structures to advance their agendas, as seen in other countries like the United States.
In some countries, independent candidacies are allowed but come with specific requirements, such as minimum voter support or formal registration. For instance, in the United States, rules vary by state, while in the UK and Chile, independent candidates must meet basic electoral requirements.
In 2025, the STF ruled against independent candidacies, reinforcing the necessity of party affiliation as per the Constitution. Any shift towards allowing independent candidates would require constitutional amendments and a reevaluation of electoral processes, including campaign financing and media access.

