Opinion of this quote

[Gustaf]

Yeah, monetary union (in a sense) leads to more economic inequality between regions unless combated with fiscal policy.

[Gustaf]

The political leanings of people opposed to the euro varies a lot from country to country. In Scandinavia opposition has traditionally come from the left and support from the right. There has been a lot of shifting over the last few decades though, with conservatives becoming increasingly opposed and social democrats increasingly in favour.

In the UK I believe the Tories were the pro-EU party until Thatcher. Since then it has clearly been the other way around.

In the continent I think it's also quite mixed. While far-right parties have tended to be euroskeptic, the Christian Democrats have probably been the most positive. It is their project, after all.

Overall though the mainstream is mindlessly pro-EU everywhere except for England, really. Maybe Poland as well (although their parties tend to be mindless in general...)