He rose to national attention at a relatively young age when, after the 1960 Turkish coup d'état, he became part of the defence team for the imprisoned, and later executed ex-Prime Minister Adnan Menderes and other Democratic Party notables.
[2] He defended the MPs freedom of speech and was offended by the wording of the prosecutor who argued militants of the out-lawed Kurdistan Workers' Party had taken refuge in the parliaments building.
[2] Cindoruk therefor refused to send the petition to lift the immunity to the parliaments Justice and Constitutional Commission and only his deputy Yılmaz Hocaoğlu [tr] sent it on in May 1992.
[3] After Süleyman Demirel's election to the Presidency of the Republic vacated by Turgut Özal's death in 1993, he could have become the Prime Minister if he had not opted for a time to remain in his seat, thus opening the way for Tansu Çiller.
He resigned from the Speaker's position in early 1995 and launched his own political movement around Party for a Democratic Turkey (DTP),[a] but it did not register successful results in the general elections of 1996.