European Parliament Election Campaign Bus Tours Bavaria

The stars of the European Union (EU) sit on postcard being placed in a transparent ballot box as a European Parliament election campaign bus visits the Bavarian city of Aschaffenburg, Germany, on Monday, May 13, 2019. The stakes are high for this year's elections to the European Parliament, with widespread predictions that a growing chorus of populists will see historic gains at the expense of establishment parties. Photographer: Alex Kraus/Bloomberg via Getty Images