Hungarian Prime Minister Viktor Orban has run into political trouble ahead of European parliamentary elections in June, with his ruling party shaken by two political scandals within six weeks.

Orban is a long-time ally of former U.S. President Donald Trump and widely seen as Russian President Vladimir Putin’s closest supporter in the European Union. The right-wing leader has led the central European country since 2010, making him the EU’s longest-serving head of state.

Yet two major scandals have recently rocked his dominance of Budapest’s political landscape at a…