John McDonnell and Jeremy Corbyn. Photo: Stefan Rousseau / PA Wire/Press Association Images. All rights reserved.
If you want to understand what Labour conference was like in 2015, know this: after it was over, I had to take several days off work to recover. Last year Corbyn had just won the leadership, and although his victory had been expected, the resultant acrimony was intense. People roared at one another in fringe meetings, journalists stalked the halls looking for scandals, the left was exuberant, the right was indignant. It was exhausting and stressful.
