It seemed a good idea. Support Winston Peters in the Northland byelection to give John Key a bloody nose.
It would save the embarrassment of coming third and show Andrew Little's ability to work with Peters. So Little dumped on Labour's own candidate.
The young Labourites cheered. Finally, a leader with smarts. It's MMP in action, they cried. It's pragmatic politics. Labour must hold its nose, look the other way, and back Peters. If that's what it takes, that's what we do.
The old hands weren't so sure. Dumping on your own candidate didn't seem right. And Labour's support for Peters embarrassed them.
They also knew that giving Peters an opportunity, any opportunity, would not necessarily develop to Labour's advantage.