French Polynesia's main opposition party, the Tahoeraa Huiraatira, says it will contest the early general elections due in two months.
The party leader, Gaston Flosse, made the comment despite objecting to aspects of the reform plan being imposed by Paris which will include a new electoral system.
The ruling Union For Democracy, which is also opposed to the reform, mooted the idea of boycotting the polls but Mr Flosse has told local radio that his party will be ready.
"The Taheoraa will vote on January the 27th. Obviously we are already in battle mode. We hold meetings practically every night. We're renewing our organisation where we haven't renewed it yet."
Gaston Flosse's party lost power in the last general election in May 2004 but the supreme court in Paris cancelled 37 of the assembly's 57 seats because of irregularities.