Labour's David Parker has announced he is throwing his hat in the ring to become the party's leader.
Mr Parker, who is currently the acting Labour leader, made the announcement at a press conference today.
He will be taking on former leader David Cunliffe, Grant Robertson and Andrew Little.
There is speculation former leader David Shearer will also stand.
Prime Minister John Key said earlier today that picking a new leader is the least of the Labour Party's concerns.
He believes the real issue for Labour is about the relevancy of the party to the voting public.
"Over the course of the last six years they've lost a relevancy and unless they can regain that then I'm not very hopeful for the Labour Party, and in the position that I sit in I don't want to be very hopeful for the Labour Party," he told TV ONE's Q and A.
Mr Key says there is a "presidential type of election process" which puts emphasis on the leaders.
But he says the voters in the last election voted on the issues that mattered to them, and it was "less about the individual than you might think".
The Prime Minister says there are "lots of different factions" in the Labour Party, and lots of people who want to be leader.
"It's going to be an interesting caucus vote because in reality so many people are going to be in the game.
"They will all be voting for themselves and not many people will be left to vote for someone who is going to be the leader," he told Q and A.
When asked if Mr Parker was his best opponent and the one to be most feared, Mr Key replied: "We take any leader of the Opposition, when they finally deliver us one, very seriously, if you don't then you do so at your own peril as prime minister."