"Bukele's considered a populist, an outsider candidate who ran against the system. He says that he comes from the left, but he had to join a political party of the right to run."There's an effort to try to place Bukele in the overall context of Latin America. The two terms most frequently used to describe him seem to be "outsider" and "independent." He is a two-term mayor, including one term as mayor of the capital for the FMLN. He was expelled from the FMLN and then had to look for an electoral vehicle to allow him to campaign and win in 2019. His election to the presidency didn't come out of the blue but it was difficult to guess the eventual path.
While he headed the GANA ticket, Bukele has no interest in representing GANA. He has his own Nuevas Ideas party to build. At the same time, GANA does not appear to have any interest in making Bukele their own either. Both parties say that they did not engage in any quid pro quo prior to or during the campaign. However, GANA's Will Salgado thinks that he and Bukele agreed that GANA and Nuevas Ideas would form a coalition to support him in the 2021 San Miguel mayoral elections.
It is unclear whether any other side deals were made and too early to tell what the two parties' relationship might look like the next two years before the mayoral and legislative elections. Bukele doesn't have much legislative support and even if he did work with GANA legislators it wouldn't be enough. Fortunately for Bukele, his overwhelming victory might make the FMLN and/or ARENA more likely to work with him so as to build some momentum before 2021. At this point, obstructing Bukele's legislative agenda doesn't appear to have much upside.