The victory by Ekrem Imamoglu removes control over Turkey’s largest city from Mr. Erdogan and ends his party’s decades-long dominance there. Opponents said it could threaten Mr. Erdogan’s 16-year hold on power.

News analysis: The defeat for Mr. Erdogan signaled voters’ mounting despair over rising unemployment and inflation during his rule, our European economics correspondent writes. The president has repeatedly delivered on his promises of potent economic growth, but he has produced expansion by resorting aggressively to debt.

Democratic field prepares for its close-up

The first debates of the presidential campaign are this week, and may represent the best — and for some, the only — opportunity to stand out from a throng of competitors. We look at how the candidates are preparing.

The details: The 20 Democrats who made the cut have been divided into two groups, one of which will debate on Wednesday and the other on Thursday. Here’s how it will work.

Related: Joe Sestak, a former Navy admiral and congressman from Pennsylvania, has become the 24th member of the Democratic field.