Several studies have already discussed the consequences that coalitions have for party fragmentation and representativity in Brazilian proportional elections. The present work intends to present these discussions and analyze the dynamics between coalitions and electoral results in the context of the 2020 Brazilian municipal elections. This exploratory study is based in comparisons between the data of 2016 and 2020 elections and tries to identify possible consequences that the end of the coalitions in the proportional elections may have provoked in the results of the municipal elections. From there, possible impacts in the national elections of 2022 are discussed. The analyzes suggest the influence of the end of the coalitions on the degree of fragmentation of the municipal benches and also on the electoral strategies of the parties. It is hoped that the results achieved will contribute to those who seek to understand the dynamics that arose in the Brazilian political system with the end of coalitions and also suggest paths for future research.