This thesis compares two theories of voter behavior in the 2019 European Parliament election (EP election). The second-order national contest theory claims that the European Parliament elections are basically seen as unimportant and are predominantly about national issues. In contrast, the competing Europe matters theory (or EU matters) claims that voters to a significant degree are motivated by European issues. Research on earlier elections has presented evidence strongly in favor of the second-order national contests theory, however, the most recent elections show more ambiguous results. With Europe having gone through a refugee crisis since the last EP election, and with Brexit taking place in the run-up to the election in 2019 making th...