Turks narrowly backed the shift to the executive presidency in a referendum last year. The changes are due to take full effect following the victory of Mr Erdoğan and his AK Party in June 24 presidential and parliamentary elections.
Mr Erdoğan will take his oath in parliament on Monday at 4pm and a ceremony will then be held at his palace in Ankara, officially ushering in the new executive presidency, which replaces a parliamentary system in which the prime minister and government had held most power.
Seventeen heads of state, including TRNC President Mustafa Akıncı, as well as eight prime ministers and speakers of parliament have confirmed their attendance.
Under the new arrangements, the post of prime minister will be scrapped. The president will select his own Cabinet and chair its meetings, and will also be able to form and regulate ministries and remove civil servants, all without parliamentary approval.
A decree published on Wednesday in the Official Gazette makes changes to laws dating from 1924 (just after the founding of the Turkish Republic by Mustafa Kemal Atatürk) to 2017, altering all references to the prime minister and Cabinet of ministers to the president and the president’s office.
The government has been issuing decrees, bypassing parliament, since a state of emergency was imposed following an attempted military coup in July 2016. Mr Erdoğan has promised to lift emergency rule after the election.
Mr Erdoğan won 52.59 per cent of votes in the June 24 presidential elections, broadcaster CNN Türk said on Wednesday.
The main opposition’s candidate Muharrem İnce won 30.64 per cent, while the jailed candidate of the pro-Kurdish opposition, Selahattin Demirtaş, won 8.40 per cent of votes, CNN Türk said.
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