In an emergency episode of On the Tiles, Thomas Coughlan is joined by Newstalk ZB's Jason Walls to analyse a chaotic 24 hours for the National Party. What was Judith Collins thinking in demoting Simon Bridges, and was this a 'bridge too far' after other shows of strength? What does this mean for National's already beleaguered board? Who will replace Collins as leader and what will her legacy be? And which National MP emerged on top from this mess?