Turkey's main opposition Republican People's Party (CHP) and three other opposition parties have reached a deal on an alliance for snap parliamentary elections on June 24, a CHP official said on Wednesday.
The official, who declined to be identified, told Reuters the deal between the CHP, the fledgling Iyi (Good) Party, the Saadet Party and the Democrat Party would be formally announced at a news conference on Thursday.
It will enable the smaller parties in the alliance to skirt a regulation that mandates parties must receive at least 10 percent of the vote to enter parliament. The deal creates a broad coalition against President Tayyip Erdoğan's ruling alliance.
Erdoğan's ruling AK Party has established an alliance with the Nationalist Movement Party (MHP).
The opposition alliance deal is due to be signed at 3 pm (1200 GMT) on Thursday. A deadline of May 6 was set for election alliances to be filed with the High Election Board.