Iraq's political system, the result of a U.S.-supported election process, has been increasingly characterized by peaceful competition, as well as by attempts to form cross-sectarian alliances. However, ethnic and factional infighting continues, sometimes involving the questionable use of key levers of power and legal institutions. This was in evidence in the successful efforts by Shiite Arab political leaders to disqualify some prominent Sunni Arab candidates in the March 7, 2010, national elections for the Council of Representatives (COR, parliament), which will form the next government.