Why did so many Kenyans vote for the President elect?

From the BBC World Service: William Ruto wants to unite his country after a narrow election victory. More than half the election commission’s members have rejected the outcome and the result could be subject to a legal challenge. Plus, a year on from the Taliban takeover in Afghanistan, we hear from the former central bank governor Ajmal Ahmady about the status of $7 billion in central bank assets, which are frozen in the U.S.