Rodney is predicting that Peters will go with Labour, if he holds the balance of power.
I agree, and said back on June the 18th that I thought it was 75% likely Peters would choose Labour.
Now to be fair I have since lowered the probability a bit to around 65%, but still think that is the way he will jump.
In the end no-one knows for sure except Winston. As Don Brash says – voting for NZ First is like tossing a coin – no certainty of outcome.