Turkish President Recep Tayyip Erdogan's hopes of assuming greater powers have suffered a major setback when the ruling AK Party he founded failed to win an outright majority in a parliamentary election for the first time.
Mr Erdogan, Turkey's most popular modern leader but also its most divisive, had hoped a crushing victory for the AKP would allow it to change the constitution and create a more powerful US-style presidency.
To do that, it would have needed to win two-thirds of the seats in parliament.
Instead, it has been left unable to govern alone for the first time since it came to power almost 13 years ago.
It faces potentially weeks of difficult coalition negotiations with reluctant opposition parties as it tries to form a stable government, and the possibility of another early election.
With 98% of ballots counted, the AKP took 40.8% of the vote, according to broadcaster CNN Turk, down from 49.8% at the last parliamentary election in 2011.
"Everyone should see that the AKP is the winner and leader of these elections," a defiant Prime Minister Ahmet Davutoglu, leader of the AKP, said in a balcony speech to the party faithful at its headquarters in Ankara.
"No one should try to build a victory from an election they lost," he told thousands of supporters.
Jubilant Kurds, flooded the streets of the southeastern city of Diyarbakir setting off fireworks and waving.
The pro-Kurdish Peoples' Democratic Party (HDP) crossed a 10% threshold to enter parliament for the first time.
With initial results putting it on around 13%, HDP co-leader Selahattin Demirtas ruled out a coalition with the AKP and said the election outcome had put an end to talk of the stronger presidential powers championed by Mr Erdogan.
"The discussion of an executive presidency and dictatorship have come to an end in Turkey," he told a news conference in Istanbul, describing the outcome as a victory "for those who want a pluralist and civil new constitution".
The AKP's failure to win an overall majority marks an end to more than a decade of stable single-party rule and is a setback for both Mr Erdogan and Mr Davutoglu.
Both men had portrayed the election as a choice between a "new Turkey" and a return to a history marked by short-lived coalition governments, economic instability and coups by a military whose influence Mr Erdogan has now reined in.
The partial results indicated that the HDP, with its roots in Kurdish nationalism, had succeeded in widening its appeal beyond its Kurdish core vote to centre-left and secularist elements disillusioned with Mr Erdogan.
It is now likely to play a significant role in parliament, particularly trying to advance a two-year-old peace process between the Turkish state and the Kurdistan Workers Party (PKK) militant group, which first took up arms in 1984.
Mr Demirtas said earlier that the campaign had not been fair or just.
A bombing on Friday killed two people and wounded at least 200 at one of its rallies in Diyarbakir.
The results broadcast by CNN showed the secularist Republican People's Party (CHP) would again be the second biggest group in parliament, with around a quarter of the vote.
Murat Karayalcin, the party's Istanbul chairman, said the outcome was a "clear no" to the executive presidential system championed by Mr Erdogan, while party spokesman Haluk Koc ruled out a coalition with the AKP.
The right-wing Nationalist Movement Party (MHP), long seen as the AKP's most likely partner in any coalition, took around 16% of the vote.
