Kuhn, T., et al. (2016). "An ever wider gap in an ever closer union: Rising inequalities and euroscepticism in 12 West European democracies, 1975–2009." Socio-Economic Review 14(1): 27-45.

Ur abstract:

A multilevel analysis of 79 pooled Eurobarometer survey waves across 12 countries from 1975 to 2009 confirms that increasing income inequality boosts euroscepticism especially amongst the low educated. The findings are consistent with previous research on the link between income inequality and democratic legitimacy. They also provide empirical support for a new educational divide in the wake of European integration and globalisation, and deepen our knowledge on the predictors of EU support.