At the age of 20, Holiday was elected the youngest councilor in the history of São Paulo, with 48,055 votes. When he ran for councilman, Holiday was supported by Senator
Ronaldo Caiado (DEM-GO), noting that "Holiday has the capacity to represent Brazilians who hope to see renewed policy in it. The real interest in seeing the diminution of the privileges that are granted to politicians, as for example the high salaries and heavy benefits sustained by the voters, will be diminished, as Holiday already promised. In 2020, he left his party,
Democrats, after they supported a bill that aimed to limit transport apps in the city. He joined
Patriot, and was reelected with 67,715 votes. In 2021, he was expelled from Patriot, after criticizing the party's support of
Arthur Lira to
President of the Chamber of Deputies. He joined
New Party a few months later. That same year, he left the Free Brazil Movement, mentioning the movement's lack of priority to the
fight against abortion and to the defense of LGBTQ causes. In 2022, he ran to the federal
Chamber of Deputies for the state of São Paulo, but failed to be elected, receiving 38,118 votes. Just four days later, he left New Party and joined
Republicans, and said he would not seek reelection for city council in 2024. Nine months later, in July 2023, he left Republicans, and said he hoped to continue to support
right-wing ideals "under the leadership of (former) president
Jair Bolsonaro", despite not supporting him during his reelection campaign. Days later, he joined the
Liberal Party, with Bolsonaro at this side during this affiliation. He once again said he would not seek reelection for city council, saying his focus was on the 2026 election to the federal Chamber of Deputies, but in 2024 said he considers the possibility of leaving politics to go to
medical school. == Political positions==