Thanks to Ken Clarke the Tories are heading straight back there. He let slip today that if Ireland says yes the Tories won't hold a referendum. What's changed is that the centre of gravity of the party is now firmly in the Euro sceptic camp. So I suspect Ken and his Euro sensible colleagues will have more of a difficulty in winning this fight.
How odd it would be if the Tories ended up contesting the next General Election on a platform of no referendum when they, falsely, criticised the Lib Dems on the issue as recently as last week. And especially since the Lib Dems advocated a real (in/out) referendum. How odd.