Uhuru Kenyatta, deputy prime minister, has been declared poll winner with 50.07 percent of the vote, as rival Raila Odinga says he will contest the result. In Nairobi, supporters of Kenyatta's Jubilee Coalition celebrated their candidate's triump. In Kisumu, the home town of Odinga, there were protests against what the prime minister's party say were 'irregularities' and 'vote rigging'. Al Jazeera's Peter Greste reports from Nairobi.