Arthur Henrique (PL) won the supplementary election for governor of Roraima, Brazil, on June 21, 2026 [1, 4].

The victory follows a complex legal dispute regarding the eligibility of candidates in the state. The outcome establishes a new administration in Roraima after the Supreme Federal Court (STF) intervened to resolve candidate substitution issues.

Henrique secured 160,004 votes [1], which represents 60.87% of the total vote [1]. His primary opponent, Soldado Sampaio, received 93,897 votes [1].

The path to the election was marked by judicial challenges. Henrique's candidacy had been initially barred by the STF. However, the court later authorized the substitution and regularization of candidates to allow the process to move forward.

On May 29, 2026, STF Minister Flávio Dino authorized the substitution of candidates for the Roraima government in the supplementary election [4]. Dino said, "The minister Flávio Dino authorized the substitution of the candidates for the government of Roraima in the supplementary election of June 21" [2].

Despite the legal hurdles, the PL candidate maintained his lead through the polling process. Other political entities also attempted to finalize their candidates during the window provided by the court. For example, the Solidariedade and PRD federation officialized Farah Mesquita as a candidate on May 19, 2026 [3].

The final results confirm Henrique as the winner of the June 21 contest [1, 4]. The election concludes a period of instability in the state's executive leadership, which required the supplementary vote to fill the vacancy.

“Arthur Henrique (PL) won the supplementary election for governor of Roraima”

The victory of Arthur Henrique underscores the significant role of the Brazilian Supreme Federal Court in determining electoral outcomes through the regularization of candidates. By allowing substitutions after initial bans, the STF ensured the supplementary election could proceed, though the contradictions in early candidate filings suggest a volatile legal environment leading up to the vote.