Here we can shed light on the role of Shi'i 'ulama intervening onto the political stage through its history.
Al-Hizb al-Ja'fari and Munazzamat al-Shabab, both of which were founded by notable families of 'ulama in Holy Cities, might have succeeded the tradition of local politics in Shi'i society to some extent.
Litvak defined marja'iya, Supreme Exemplar, as follows; "it resulted from the development of the concept of general deputyship (niyaba 'amma) which enabled the 'ulama to claim charismatic authority inherited from and wielded on behalf of the Hidden Imam and through socio-political processes which culminated with the reinstatement of Usulism -- the rationalist school and methodology for deducing legal norms -- in the eighteenth century.
Al-Da'wa depended for its membership and activities on marja'iya in the beginning, supported by prominent 'ulama at that time.
20] In order to realize and achieve this 'objective marja'iya', or in broader terms 'marja'iya salihiya' (proper marja'iya) or 'marja'iya rashida' (true marja'iya), he proposed the establishment of new kinds of executive and planning boards for systematic ma rja'iya; establishment of various councils, through which 'ulama can accomplish their leadership; and secure the continuity of marja'iya.
The first turning point was the withdrawal of high 'ulama from party membership under the advice of ayatollah Muhsin al-Hakim in 1960.
A mixture of laymen and 'ulama at its headquarters became one of the characteristics of al-Da'wa, as Wiley describes,  and it caused several ideological conflicts among them, though not serious enough to break up the party.
The Islamic revolution offered a new opportunity for politicized 'ulama in Iraq to find a way out of the harsh oppression of the Iraqi regime, and to flee to Iran in order to pursue broader political activities there.
During the Iraq-Iran War, however, the negative influence of the Iranian regime on the party through 'ulama cannot be ignored, especially when the Iranian regime frequently tried to exploit these Iraqi anti-government organizations to attack the regime in Iraq.
The Council of Jurisprudence is composed of 'ulama of higher rank, and is supposed to give advice to the Leadership from a judicial and religious point of view.
SCIRI, which started its activities among exiled Iraqi 'ulama who fled to Iran in 1980, insists that it is majlis (=council), and sticks to its original style as an umbrella organization over various Islamic political movements.
Its activities which developed around Muhammad al-Shirazi are based on marja'iya, and core leaders of its activities are dominated by close relatives (al-Mudarrisi brothers, who are related to al-Shirazi) within the 'ulama circle in Karbala.