Stuff has just tweeted that David Parker has suddenly pulled out of the race for Labour Party Leader. This is a huge boost for David Shearer, and I suspect Shearer is now the favourite.
No word yet on why Parker pulled out. It seems he has endorsed Shearer. I presume if he had stayed in that Labour requires the leader to get 51% of the caucus vote so in a three way contest, the lowest polling candidate would drop out and then have a second vote between the remaining two if none had got 50%.