Abstract The objective of this thesis is two-fold: first, to determine how parties get elected to the European Parliament (EP); second, how they vote, once in power. I compare two founding member states (France and the Netherlands) to two newer ones (Poland and Hungary). In order to investigate the degree of disconnection between public opinion and the votes of these countries’ delegates, I measure the former through the so-called Eurobarometer surveys. I count the bills voted on, broken down by political party for the time between May 2014 and March 2016.