That same year saw his entry into politics in the Tahoeraa Huiraatira and his election to the municipal council of Pirae in the team of Gaston Flosse.

First Polynesian president, Gaston Flosse named him a member of the government of French Polynesia by assigning a large ministry in charge of Labor, Employment, Vocational Training and Housing.

[2] In December 1987, following a reversal of the majority, Michel Buillard returned to the Assembly of French Polynesia, where he sat as an advisor in the opposition Tahoeraa Huiraatira ranks.

Gaston Flosse appointed him vice-president and awarded him the Ministry of Health, Solidarity, Housing and Research.

[12] In February 2008, just before the second round of voting in the 2008 French Polynesian legislative election, he quit as a member of Tahoeraa Huiraatira.

[13] In May 2013, he was elected representative to the French Polynesia Assembly on the Tahoeraa Huiraatira list, then chair of the Committee on Institutions, International and European Affairs, Solidarity, Employment and Relations with the Commons.