The outcomes mark a significant setback for Erdogan, less than a year after he won a third presidential term, especially given his personal campaign efforts in Istanbul, his hometown.

Ekrem Imamoglu of the secular opposition CHP party won Istanbul for a second time, solidifying his position with over 50% of the vote and a significant lead over the AK Party candidate. This defeat is the first of its kind for Erdogan's party since his rise to power 21 years ago.

The CHP also gained control of other key cities like Bursa and Balikesir, while holding onto Izmir, Adana, and Antalya. Despite the unfavorable results, Erdogan acknowledged the election outcome as a turning point, reaffirming his respect for the democratic process.

The loss is seen as a critical blow to Erdogan, who had ambitions of potentially extending his tenure through constitutional changes. This election, posited as Erdogan's last due to term limits, unexpectedly spotlighted the opposition's strength, potentially influencing the political landscape ahead of the 2028 presidential election, with Imamoglu and Ankara's Mayor Mansur Yavas emerging as prominent figures.

The opposition's victories in Turkey's economic powerhouse, Istanbul, and other regions reflect growing public discontent amid economic challenges, including soaring inflation and interest rates.

Additionally, the pro-Kurdish Dem party made gains in southeastern Turkey, although Erdogan's AK Party maintained its hold in central regions and some earthquake-affected areas in the southeast.

In the aftermath, Erdogan promised self-renewal and correction of mistakes before the next presidential election, while voter turnout remained high at over 77%, indicating strong public engagement in the democratic process.