Slovak nationalist-left government candidate Peter Pellegrini won the country’s presidential election on Saturday, cementing the grip of pro-Russian Prime Minister Robert Fico over the country.

Fico, who took power for the fourth time last October, has turned the country’s foreign policy to more pro-Russian views and initiated reforms of criminal law and the media, which have raised concerns over weakening the rule of law.

Pellegrini had 53.26% of the vote, versus 46.73% for pro-Western…