How many Parliamentary workers are there???

The DomPost ran a poll on whether people thought John Key would be the next PM. Just over half of the votes come from Parliamentary workers and 80 percent or 13,683 of those are on Helen's team (or at least not on John's.) Even 100 workers would have to vote 136 times each. What do they do all day?

For the record I voted once. No.

Update; DPF has the inside story.