Erdogan’s fate in the balance as Turkish voters head to the polls

Millions of voters across Turkey cast their ballots Sunday in a crucial election pitting President Recep Tayyip Erdogan against challenger Kemal Kilicdaroglu, whose support by a broad coalition of opposition parties has left Erdogan more vulnerable to defeat than ever before, polls indicate.

Erdogan, Turkey’s most successful politician in generations, has led the country for two decades. But he has been blamed for an economy in crisis that has battered Turkish households. And Turks are still recovering from catastrophic earthquakes in February that killed more than 50,000 people and that exposed government...