I'm curious. Is right wing opposition towards the EU born out of partisanship or something else? For example... seems to me that the concern is the lack of liberty amongst individual nations. Is that an accurate assessment or fear-mongering?
Hmmmmm............
For starters I'd hold it to depend on the side of the pond it comes from. As such Americans are obviously not going to come under any EU laws so one might ask what concern the whole issue is to any of them. I suspect, with criticism gladly invited, that a significant concern will lie in concerns of economic clout, namely that an economically united Europe forming a uniform body to be reckoned with far more than a bunch of individual dwarf states, is not seen as being in American interests. Seeing that a uniform economy obviously brings with it a greater degree of political clout.
As far as Europe herself is concerned, the primary driving force in opposing the EU lies in "make ...............(insert any country or myself and the horse I rode in on)............. great again".
One can clutter that basic desire (born from inferiority complex) up with as many factoids as one wishes, lie outright, misrepresent juristic, economic and political data, garner it all with outrageous claim of loss of personal freedom etc. etc. etc., but cut thru all the claptrap and that's what remains.
Political parties without even a semblance of any marketable program, fill that deficiency by feeding on those suffering the described ailments and, where there's not enough of it around to enhance for party political gain, even attempt to create it.
It's already been described here how "the narrative" of loss of personal or national liberty is basically invented first of all (like all good inventions not without a grain of truth), with the facts, if at all presented, made up afterwards to fit.
There are plenty of examples where detailed listing would blow the thread into the next world, the most telling ones however lie in the radical right having perceived the refugee crisis as a gift from god.
Rather than pursuing (often somewhat justified) criticism of the EU's failings in internal policies, economics, monetary measures, this platform of comparatively low merit was abandoned at once, the minute the exploitation of xenophobia offered greater spoils.
One should remember that France's Front Nationale was openly anti-semitic until Marine kicked her Dad out. That gives no insight into the extent in which the whole bunch has changed its way today.
Germany's AfD at one time actually held quite a few of economical savvy that at least offered some debatable anti-EU takes. In the attempt of these founding members to cleanse the party of the anti-semitic and generally xenophobic muck that had considered it a good gathering ground, the party split with the moderates leaving it and the Nazis winning to the point that recent gains in municipal elections were achieved at the cost of the party that actually called itself Nazi outright.
The Netherlands' Wilders lot isn't even a party, considering that his PVV consists of just him and him alone.
For UKIP one just needs to name Farage for the educated reader to move on.
All of them have in common that they present no intelligent alternative of governance, other than wanting us all to put our seats back to vertical and turn our watches back to 100 years ago.