Labour deputy leader

This may be a little premature but a contract on the labour deputy leader after Little's reshuffle in late 2015 or early 2016 is an option.

Contenders could be: King, Mahuta, Sepuloni, Ardern, Robertson, Twyford, Hipkins, Davis, Nash & Other.

Good gender balance, basically current front bench plus Nash & Other.

Contract could be:

Who will be Labour Deputy on 1/1/2016.

Simply "Who is Labours next deputy" is sufficient. Trying to put a time frame on it is too annoying - what if they don't announce the new person until the 12th of Jan, for example?