The debate

What stood out for me were the open goals that Cameron had:

1. Immigration, it is fine to say that Labour has done nothing to date, but that doesn't tell us why Labour will continue to do nothing. The reason Labour will do nothing is that they are intensely relaxed about numbers. They have spent decades denouncing as racist anyone who dared even get worried about immigration. Now they promise tough action? They are just scared of the voters. In five years time, if they win, they will be scared of the voters again. In between, they will return to form.

2. Immigration Two, it is falling because of the recession. Migration from some Eastern European countries makes less economic sense due to the recession. Insofar as Brown's policies have contributed to the recession, he has helped reduce immigration.

3. Immigration Three, if anything LibDems are more relaxed about immigration. They don't have so many urban working class voters to be scared of.

4. Waste - did anyone hear Clegg deny that there was lots of waste that could be saved. And did anyone hear Clegg talk of the awful waste in the MOD as he listed the admiral/ship ratio? Did anyone hear Cameron put together the two? Did anyone hear Cameron say, "Quite right, so why do you oppose cutting this waste for a year - and you'd find it more than just the MOD? No, you didn't hear Cameron go off script to ram this inconsistent piece of opportunism down Clegg's throat.

There is no point having a reputation as a slick performer and then being a wooden perforer.

Comedians learn thousands of jokes so they can spontaneously respond to all sorts of suggestions. Cameron clearly had things he wanted to say and was desparate to say them as often as possible at any opportunity, including some very strained ones.

So, this leads me to the greatest criticism. "Jobs tax, jobs tax, jobs tax." We have rightly had the better of that debate, but you cannot link it to everything. The NHS waste, managers and cancer drugs bit is diluted not assisted by throwing the jobs tax line into mix.

Keep it simple stupid. But that means simple answers for each question - not the same answer!!