Benazir Bhutto killed in bombing/ Gunfire at a Nawaz Sharif rally

The Guardian and AP are reporting Benazir Bhutto has died in surgery after a bombing on a campaign rally. At least 20 others killed.

The BBC is reporting that a Nawaz Sharif rally was also marked by gunfire before he arrived, at least 4 killed. (The circumstances are less clear.)

Still coming in. We'll get details and impact later. Longer AP.

WaPo reports that she was shot while leaving the rally, then the bomb went off.