Romania’s pro-European Union, centrist presidential candidate Nicușor Dan won the country’s election Sunday, defeating his ultranationalist rival in a shocking upset.

Nicusor Dan, the mayor of Bucharest, defeated George Simion, a nationalist aligned with President Trump who had been seen as the front-runner.

A pro-European centrist has won Romania’s presidential election in a race seen as a key test of the country’s democratic direction.