Supporters of the ruling Pakistan People's Party hold a banner with the portraits of Pakistan's slain former Prime Minister Benazir Bhutto, center left, and President Asif Ali Zardari, center right, as they march during a rally in support of Zardari's policies in Karachi, Pakistan, Wednesday, March 4, 2009. Pakistan's biggest political crisis in over a year began when the Supreme Court upheld a ruling that banned opposition leader Nawaz Sharif from contesting elections because of a past criminal conviction. AP Photo logo AP Photo 9 months ago

Supporters of the ruling Pakistan People's Party hold a banner with the portraits of Pakistan's slain former Prime Minister Benazir Bhutto, center left, and President Asif Ali Zardari, center right, as they march during a rally in support of Zardari's policies in Karachi, Pakistan, Wednesday, March 4, 2009. Pakistan's biggest political crisis in over a year began when the Supreme Court upheld a ruling that banned opposition leader Nawaz Sharif from contesting elections because of a past criminal conviction.