Support for the ruling AK Party has dropped to 40.5 percent ahead of the June 7 parliamentary election, according to a Konda poll released to business clients, compared with 49.8 percent of the vote in the previous general elections, Reuters says.

The poll, which is not made public but was provided for clients and cited in newspapers on Friday, May 22, said the pro-Kurdish Peoples' Democratic Party (HDP) would garner 11.5 percent of the vote, above the 10 percent threshold needed to enter parliament.

The poll predicted less than 29 percent of the vote for Turkey's main opposition Republican People's Party (CHP) and less than 15 percent for the far-right Nationalist Movement Party (MHP).

Konda's polls are closely watched by the markets because of its accurate predictions in previous elections. The company told Reuters it cannot comment at this stage.