European elections have long suffered a voter turnout problem. Disinterest has been especially severe among young people.

A voter casts a ballot in the European elections in Amsterdam, Netherlands, May 23, 2019. /Reuters Photo

Young people hold placards and banners during a "Fridays for climate" protest in Paris, France, May 24, 2019. /Getty Images

A sign at a polling station in East Dulwich, south London, UK, May 23, 2019. /Getty Images