Turkish lawmakers agreed on Thursday to call snap poll on June 22, instead of November, in order to escape the political crisis caused by the disputed presidential election.
The country's Constitutional Court declared the Parliament' presidential vote on Friday void because it failed to gather the two-thirds quorum.
Foreign Minister Abdullah Gul from the ruling AK party was the only candidate in the running.
The secularist opposition believes the AK, which has roots in the political Islam, is trying to chip away at the secular freedoms in the country and raise the importance of religion in public life.
Close to 700,000 people rallied to support the secularist nature of the Turkish political system on Sunday.
The army, traditionally the stronghold of secularism in the country, which has intervened more than once in the past to enforce the legacy of Kemal Ataturk, the founder of the secularist state, has already warned it would not hesitate to do so again.