It was Ghana's longest, costliest and most acrimonious election campaign. It ended with a grand party for the National Democratic Congress on 9 December and attempts by the opposition New Patriotic Party to persuade the Electoral Commission to delay the announcement of the results. The presidential result will be difficult to challenge. The NDC's John Dramani Mahama was reelected President with 50.70% to 47.74% for the NPP'S Nana Addo Dankwa Akufo-Addo, a margin of 325,863 votes. The best estimates put the cost of the election at over US$100 million according to Africa Confidential