Yeah, I'm very critical of Labour because they're socially Left, but through electoral fear tend to economically right. If you work through their recent record its been some wins for workers on the employment rights levels without fundamental changes to the neo-liberal economic system which is slowly but surely impoverishing their base.
I agree re NZ First, and they're more populist than anything else which means they could land anywhere at any given election, but most of their voting base is still at the greypower end which tends towards more right wing socially & economically.