Initially with the coalition government, the conservative PML-N quickly departed when its leader, Nawaz Sharif (former Prime Minister), decided to lead the efforts on impeaching the former President Pervez Musharraf as well as restoring the judiciary, of which, the PML(N) played a centralized role.

Prime Minister Gillani decided to centralize the power by forming a more dense left-wing alliance that consisted of minor left parties: the ANP, MQM, JUI(F).

Prime Minister Gillani's government witnessed the sharp rise in nationwide violence, increased corruption in nationalized industries, social tension, political scandals and assassinations.

After months of delaying the Supreme Court's recommendations to investigate the corruption cases against Benazir Bhutto, Gillani was ousted from the office; nonetheless, his ministry continued to be in effect by his successor.

[3] At swearing-in ceremony, the PML(N) members declined to take oath under President General Pervez Musharraf, who they considered an illegitimate head of state.