Pollies: National's Mark Mitchell and Labour's Ginny Andersen on National's first home buyer policy, Green's supermarket policy, PISA results, carbon credit auctions

Today on Politics Wednesday, Mark Mitchell and Ginny Andersen dig into some of the biggest stories of the week thus far.  They discussed National's plan to widen access to 5% first home deposits, the Green Party's plan to break up the supermarket duopoly, carbon credit auctions, and the latest education results.  LISTEN ABOVE   See omnystudio.com/listener for privacy information.