Millions of Kenyans voted today in a close-fought election marred by delays, sporadic trouble and rigging charges from the opposition.
Police fired teargas to disperse an angry crowd in one district, as voters across the east African country took part in the tightest contest since independence from Britain in 1963.
President Mwai Kibaki (76) and former ally Raila Odinga (62) are contesting the presidency.
Mr Kibaki, whose National Rainbow Coalition unseated Kenya's 39-year ruling party in 2002, faces the possibility of losing his re-election bid despite a sound economic record and the backing of his Kikuyu tribe, the country's largest.
If he loses, he will be Kenya's first sitting president ousted at the ballot box.
Analysts say the chance of a second transfer of power in two elections shows democratic maturity. Others fear it heightens the potential for trouble.
Many of the 14 million eligible voters began queuing long before voting stations opened for the concurrent presidential and parliamentary votes.
After delays in opening, about a quarter of the 27,000 polling stations were kept open past the closing deadline, the Electoral Commission of Kenya (ECK) said.
Chief EU election observer Alexander Graf Lambsdorff said voting was generally going well, and he had seen no evidence of fraud.
Delays, however, stoked tensions in areas including Kuresoi, where police fired teargas to disperse voters angry their names were missing from registers.
Gunmen shot dead one man and wounded another two near a polling station in the slum area of Kibera.