Multiple political parties in Turkey underwent candidate selection processes in the run-up to the 2018 presidential election. Parties represented in the Grand National Assembly were able to field candidates directly by collecting signatures from at least 20 of their Members of Parliament, as were parties who had no representation but won more than 5% in the previous general election. Candidates that did not meet either criterion were required to obtain over 100,000 signatures from Turkish citizens between 4 and 9 May.