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József Szájer — head of drafting, main drafter.

László Salamon — earlier constitutional‑prep committee chair; ideological/conceptual contributor.

Gergely Gulyás — member of drafting committee.

Boross Péter — external adviser / elder statesman.

Pálinkás József — external adviser (Academy of Sciences).

Schöpflin György — external adviser / MEP.

Pozsgay Imre — external adviser / former state minister.

Stumpf István — external adviser (initially), later constitutional judge.

Name	Known Role / Involvement
József Szájer	Head of the final drafting committee — he composed the draft text (on his iPad) and led the drafting. The Orange Files+2Wikipedia+2
László Salamon	Chair of the earlier 45‑member “preparatory committee” (ad‑hoc constitutional‑preparation committee). Magyar Helsinki Bizottság+2Hungarian Electronic Library+2
Gergely Gulyás	Member of the final small drafting committee responsible for the constitution text. The Orange Files+2OSW Ośrodek Studiów Wschodnich+2
István Balsai	One of the initiators of the 45‑member preparatory committee (the supporting motion in Parliament was submitted by him). Magyar Nemzet+2Origo+2
Bálint Ablonczy	His memoir/document indicates that he was deputy‑chair by delegation from Fidesz to the ad‑hoc constitutional committee in 2010. Hungarian Electronic Library+1
Péter Boross	Named among the “expert / adviser group” consulted in connection with constitutional preparation. Magyar Helsinki Bizottság+1
József Pálinkás	Then‑head of the Magyar Tudományos Akadémia (Hungarian Academy of Sciences) — member of the “consultative / expert” group involved in the constitution‑making process. Wikipedia+2Magyar Helsinki Bizottság+2
György Schöpflin	Member of the adviser/consultant group supporting the constitution‑making process. Magyar Helsinki Bizottság+1
Imre Pozsgay	Also listed among the “experts / senior statesmen / advisers” invited during the constitutional process. Magyar Helsinki Bizottság+1
István Stumpf	Initially part of the expert/adviser grouping, though later moved on (e.g. became constitutional judge) — listed in documentation about consultation‑committee. Magyar Helsinki Bizottság+1
János Csák	Member of the “national consultation committee” set up under Szájer to gather public opinion via questionnaires. Wikipedia+1
Zsigmond Járai	Member of the same national consultation committee (supervisory‑board chairman of the national bank at the time). Wikipedia+1
Katalin Szili	Former Speaker of Parliament; also listed among members of the “consultation committee” for public input. Wikipedia+2Wikipedia+2