No-one can forget that Denmark has voted 'Nej' before - in the referendum on joining the euro. Eurosceptics across the continent will be delighted if voters in this small nation do so again, none more so than those in the UK. They may be very different votes, but if the Danes can do it twice, what's to stop the Brits from doing it just once? So today we watch, and wait.
Being in Europe makes Britain stronger in international trade talks. By being part of the world's largest market, standing with 500 million people, Britain is a more important trade partner for countries around the world than we would be on our own. This has been demonstrated vividly today with the signing of a new free trade agreement between the EU and Vietnam.
David Cameron needs to convince his backbenchers that he has reformed the Union. Research by the think tank Open Europe has suggested that 203 of the 330 Conservative MPs can be characterised as 'swing voters.' That is to say, they are either not particularly interested in the EU or who are waiting until the results of the renegotiation before making up their minds on the referendum.
Ever since he first gave in to backbench Tory demands for an EU referendum, David Cameron has known that the biggest risk to Britain staying in Europe is public unease about immigration. Cameron's conundrum in 2013 was to persuade the voters that somehow he was acting on their concerns, while not breaking the EU's key principle that any citizen is free to move around for work.
There are hopes that all of this could soon change, and a new, impassioned and effective pro-European Conservative grouping will emerge. I really hope so. None of us who believe in the UK continuing to be part of the European Union can afford to be complacent. We are in a fight. And all of us, whether Conservatives, the business community or simply voters, have to stir ourselves. There is a lot to do, a lot to lose, and a whole lot to gain.
If you take a look at the pro-EU StrongerIn website, the first thing you will read is the following message - blurting out of the screen in big, bold, white letters: "Britain is stronger, better off and safer in Europe than we would be out on our own." Let's set this record straight - we love 'Europe'. We just hate the EU!