"Emmanuel Macron, the French president, has announced that he is dissolving the national assembly, and calling for legislative elections on June 30 and July 7.
The French president said that he can’t pretend nothing has happened, that the outcome of the EU election is not good for his government and that the rise of nationalists is a danger for France and Europe."
People vote for EU members from their own countries (so France in this case). Macron’s party underperformed in those elections, so he’s hoping to get ahead of any further decline, maybe with the hope that the EU vote was more of a protest vote, rather than a sincere desire for the far-right to be in power.