He shouldn't because it isn't a constitution.

If we had a referendum it would not be about the constitution anyway. It would be about whether we are in Europe or not. That's not a realistic option.

It would be like my children voting on whether they should have a dad or not. It is not realistic.

I campaigned against it as a young leftie - but we have to accept it is a reality now.

I am not convinced. If I was pushed I would say that is what was in the manifesto and that is what we should do.

But the case for a constitutional treaty has got to be made more clearly. It has to be explained to the public.

They have got to reach out to the hearts and minds of the unions and reach out to the wider community.

My gut feeling is that you can not have a referendum unless you have a very simple, straightforward question.

It was 1975 when we last had a referendum. We have had 32 years to take stock. We have had successive, incremental changes since then through a series of treaties.

It may be time to have a debate on the direction Europe is taking and whether it is right or not.

From a socialist point of view, I wouldn't think the current state of Europe is what most working people would want.

Gordon Brown might be hoping one of the other member states rescues him by rejecting the treaty, in the way Blair was saved by France and the Netherlands.

It is very different for us, compared to other member states, because we have got the red lines. So I don't think there is any need for a referendum.

Gordon Brown has done a lot to improve openness, with citizens' juries, since he became prime minister, on health and education.

But the EU does not feature as a main concern on the doorstep. People are far more interested in health and education for their kids.

I think there are too many consultations and referendums. We elect people to represent us and if we disagree with them we put our views across in different ways.

I don't think there is any point in having a referendum on a constitution when most people don't understand what it is about.

Even if you explained it better to people, it would just be taken over by the eurosceptics. It would just be about political point scoring.

I don't really believe in referendums. The Tories only want one because they are anti-European.

There are so many half-truths told about the EU by the media that it would not be a fair debate.

The government needs to do a better job in getting the pro-European message across, but that will take years. It would not happen in a referendum campaign.