The Green Party's discipline of Julie Anne Genter's come into question, compared with the departure of Darleen Tana and Elizabeth Kerekere last year.
Genter's been forced to apologise to the House, after crossing the floor in May and yelling in the face of a National Minister.
ZB senior political correspondent Barry Soper predicted Genter wouldn't receive much punishment in the first place.
LISTEN ABOVE

Gavin Grey: UK correspondent on Labour's poor showing at the local elections
03:41

Geoff Bertram: energy economist on the Greens calling for the Government to bring down power prices
05:43

Shane Solly: Harbour Asset Management expert on the market reactions to the 'no deal' announcement on the Middle East conflict
03:07