Trevor Kavanagh has just said that he thinks Ed Miliband faces an almost impossible task with his speech this afternoon. He is speaking to so many different audiences that he will find it very difficult to please them all. As Trevor said, you wouldn't envy the speechwriting team, would you?
I think the performance is as important as the content. It really does need to be the speech of his life. Ed Miliband is at his best when he is not reading from a script, but I doubt whether he will dare to do a Cameron and wander round the stage. It would be a high wire act, but he would win a lot of respect if he did it.
Another way he would steal the show is if he was able to announce that his brother had decided to serve in his shadow cabinet. I somehow doubt that will happen, but you never know.