Why? Why is that so important to you anymore? You've got what you wanted with this referendum.
In order to have that we'll also have to see extremist parties, such as national front in France, confiscate the whole debate re. EU or/and imposing a certain thin line and level to the other ones.
I can't see how the raise of nationalism across Europe will bring anything good. The ascension of right-wing, eurosceptic and/or extremist parties do not sound like fun unless your wish is to live in a very conflictual and tribal world. And unfortunately, we can go back there faster than we can believe now.
Be careful what you wish for..