Kenya: Kenyans go to the polls today in a referendum to decide whether to adopt a new constitution at the end of a campaign marked by killings and tribal hatred.
At least nine people have died as rallies turned into riots, with both sides accusing the other of inciting violence.
Several embassies have warned holidaymakers to stay away until the end of the month.
The final rallies held by the "Yes" and "No" camps - designated banana and orange - passed off peacefully on Saturday but many businesses in the capital Nairobi will remain boarded up for the next two days.
One western diplomatic source said: "We cannot rule out the possibility of more violence".
The contest is widely seen as a judgment on the record of President Mwai Kibaki and a dress rehearsal for elections in 2007.
Mr Kibaki came to power at the end of 2002, sweeping out the old regime of Daniel arap Moi, promising to rid the country of corruption and update a constitution written by the country's old colonial masters on the eve of independence.
But his anti-corruption drive has faltered, his health is widely believed to be failing, and the drafting of a new constitution has taken almost three years rather than the promised 100 days.
The main issue at stake in the proposed constitution is the power of the president, with critics saying the draft does not offer a strong enough prime minister to counter the head of government. Instead the prime minister can be appointed and removed by the president. But tribal politics and personal rivalries are never far away.
Lucy Oriang, writing in the Daily Nation newspaper, pointed out that once again Kenya's metropolitan, political elite has manipulated rural, tribal fractures in order to gain a political advantage. "The beast within us has been unleashed and returning it to its cage will take some time," she wrote.
Raila Odinga, head of the No campaign despite being a minister in Kibaki's coalition government, can expect support from members of his Luo tribe. That will be enough to push many Kikuyus - from Kibaki's tribe - to vote yes.
Maina Kiai, a human rights lawyer, said: "It's been about ethnicity and political payback, not the constitution." Last week the government temporarily shut down Kass FM, a local radio station that broadcasts in the language of the Kalenjin tribe, amid accusations that it was inciting violence. The only opinion poll during the contest gave the orange camp a decisive lead with large numbers still undecided.