Abdullah Abdullah pulls out of Afghan presidential election run-off - telegraph

Mr Abdullah also said the Afghan people should not accept results of an election from the current election commission and told supporters Mr Karzai's government had not been legitimate since its mandate expired last May.

Hillary Clinton has indicated that the second election will validate Mr Karzai's position even if he is unchallenged. Abdullah Abdullah pulls out of Afghan presidential election run-off

Karzai challenger quits Afghan runoff - CNN
Los Angeles Times - ABC Online