As the election campaign kicks off for real today, David Cameron has told us that we face a choice between him and Ed Miliband as the next Prime Minister.

What an arrogant thing to say. There is no fundamental law of the universe that says that the Tories and their mates in the Labour party have a divine right to take it in turns to rule over us. The choice of the next Prime Minister is up to the British voters, not up to David Cameron.

I'm not sure which makes me angrier. That Cameron takes the electorate for granted like this, or that the electorate will happily go along with it, voting for Labour and the Tories in their millions.