Act Party leader John Banks says he will be standing again at the next election in his Epsom electorate.
Mr Banks is currently Act's only MP, after the 2011 election which saw the party's support slump.
Speaking on TVNZ on Sunday, Mr Banks described himself as being in the twilight of his political career, which stretches back 36 years.
But he says he will be running again in next year's election, because the public want a committed coalition partner for National, rather than a Labour-Green government.
Mr Banks says he remains passionate about the Act Party's principles of freedom, choice and responsibility.