This is the best summary I could come up with:

With more than 90% of ballot boxes counted, incumbent Istanbul Mayor Ekrem Imamoglu, of the Republican People's Party, or CHP, was leading by a wide margin in Turkey's largest city and economic hub, according to the state-run Anadolu Agency.

The vote was seen as a barometer of Erdogan's popularity as he sought to win back control of key urban areas he lost to the opposition in elections five years ago.

The result came as a boost for the opposition, which was left divided and demoralized after a defeat to Erdogan and his ruling Islamic-oriented Justice and Development Party, or AKP, in last year's presidential and parliamentary elections.

Sinan Ulgen, director of the Istanbul-based Edam think tank, said "the surprising outcome" was due to voters wanting to punish the ruling party over the "depth of an economic malaise."

In previous years, Erdogan's government removed elected pro-Kurdish mayors from office for alleged links to Kurdish militants and replaced them with state-appointed trustees.

Analysts said a strong showing for Erdogan's party would have hardened his resolve to usher in a new constitution — one that would reflect his conservative values and allow him to rule beyond 2028 when his current term ends.

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