In the 1970s, Abdul-Mahdi was a leading member of the
Iraqi Communist Party. The party split into two separate factions, the ICP-Central Committee, which was more accommodating of the military governments that had ruled Iraq since 1958, and the
ICP-Central Leadership, which rejected all forms of cooperation of what it regarded as anti-progressive regimes, in 1967. Abdul-Mahdi joined the ICP-Central Leadership, and continued being active until he was expelled in and formed his own
splinter claiming to be the legitimate ICP-Central Leadership. Both the ICP-Central Leadership and Abdul-Mahdi's splinter gradually disappeared by the early 1980s. By that time, Abdul-Mahdi adopted
Iranian Islamic ideas, eventually merging with the Islamists when
Ayatollah Khomeini eradicated the communists and liberal opposition groups in
Iran. Abdul-Mahdi continued his association with Iran and gradually amalgamated his group within the ICP-Central Leadership with the Iranians, rejecting his
Marxist past and devoting all his group's time to propagating Khomeini's ideas in
France, where he lived at the time. He eventually was made a member of the
Supreme Council for the Islamic Revolution in Iraq, an exiled opposition party and militia that was formed by Iran in Tehran in 1982 but composed exclusively of Iraqi exiles. ==Vice-president ==