The 47-member Council for a New Constitution includes constitutional lawyers, judges, academics and politicians from across the political spectrum, although conservative and right-wing figures form its core.
Members include Law and Justice (PiS) politicians Przemysław Czarnek and Krzysztof Szczucki, former PiS MEPs Ryszard Legutko and Zdzisław Krasnodębski, and Confederation politicians Michał Wawer and Przemysław Wipler.
Former Constitutional Tribunal head Julia Przyłębska and former Supreme Court Chief Justice Małgorzata Manowska are also members.
Other members come from outside Nawrocki's political camp. They include former Kraków Mayor Jacek Majchrowski, former lower-house Speaker Józef Zych and constitutional lawyer Ryszard Piotrowski, who has questioned whether Poland needs a new constitution at all.
Nawrocki appointed the council to prepare proposals for what he has called a "new-generation constitution" by 2030.
He has argued that Poland's current system divides executive authority too ambiguously between the president and prime minister. He has suggested that the country consider either a presidential system or a system with a strong prime minister.
Several council members have expressed similar views.
Singer and former lawmaker Paweł Kukiz has said the council's work should determine whether Poland should move toward a presidential system or one with a strong prime minister, or chancellor, along the lines of Germany.
Szczucki has previously proposed changes modeled partly on France's political system that would give the president greater influence over the government and state institutions.
Under Poland's current constitution, the directly elected president has significant powers, including the right to veto legislation, while the government is accountable to parliament and is responsible for most domestic and foreign policy.
The division of powers has repeatedly caused disputes when the president and government come from opposing political camps.
Under Nawrocki and Prime Minister Donald Tusk, conflicts have included ambassadorial appointments, judicial appointments and presidential vetoes.
There is no consensus within the council that the current system should be replaced.
Piotrowski has argued that Poland's constitutional problems stem largely from the way politicians apply the existing law.
"We do not need any reset; we do not need any new constitution," he said after joining the council.
The governing coalition has largely stayed away from the initiative.
Senior politicians have questioned both the need for a new constitution and the likelihood of securing the parliamentary support required to adopt one.
A constitutional amendment requires a two-thirds majority in the Sejm, Poland's lower house of parliament, followed by approval in the Senate, the upper house.
Nawrocki's political allies do not currently have such a majority, meaning any major constitutional changes would require support from parties outside the right.
The council's membership and proposals already advanced by some of its members suggest that the balance of power between the presidency and government will be one of the central issues in its work.
(rt/gs)