good evening from nottingham where rishi sunak and sir keir starmer have clashed over tax, immigration and welfare in theirfinal head to head debate before polling day next thursday. it was a heated confrontation, during which they faced questions from a live audience behind me, who challenged them to explain and justify their stance on integrity in politics, the cost of living and brexit. our political editor chris mason is here. what stood out? for me it was all about the tone, it was all about the exchanges as opposed to the contents but the content matters but much of that will be familiar to regular viewers over the past five weeks or so. but it was the exchanges which are defined tonight. it was a much more free flowing debate compared to previous debates in this campaign. there was more anger, more passion, morejeopardy. rishi sunak had nothing to lose tonight and that defined his approach, i thought. nothing to lose tonight and that defined his approach, ithought. he