The French Polynesian president, Edouard Fritch, says he won't resign from the Tahoeraa Huiraatira Party despite him being its only member in government.
The party leader, Gaston Flosse, spearheaded the expulsion of all other government members from the party in a rift which has left it in a minority and in opposition.
Apart from Flosse, Mr Fritch isthe only Tahoeraa member elected by the party's Congress.
Mr Fritch says he has always worked for the Tahoeraa and stood for its policies, but says the party has become what he calls a machine for exclusion.
He made the comment to Tahiti-infos after yesterday's government re-shuffle, in which he added a portfolio for the leader of the opposition Atia Porinetia party, Teva Rohfritsch.
The move is seen as an attempt to shore up support.
Mr Fritch has 23 backers in the 57-member assembly.
At the last election, the Tahoeraa had won 38 of the assembly's 57 seats.