The political temperature rose sharply in Kenya on Thursday after one of the two camps competing for the presidency alleged the race had been rigged and that the laborious counting of votes should start again from zero. Hopes for a punctual outcome from Monday’s poll were dashed as arguments about the reasons for the failure of costly electronic voting intensified. Partial results from the Independent Electoral and Boundaries Commission slowed to a trickle again on Thursday, with votes from little more than a third of the 291 constituencies tallied by nightfall. Even those results are almost certain to face legal challenges, prolonging the tension in Kenya. East Africa’s biggest and most hi-tech economy is barely moving and the country is stuck in a dangerous ethnic gridlock after most voters opted for their tribal choices. Uhuru Kenyatta, son of Jomo Kenyatta, Kenya’s first president, was still in the lead on Thursday but the electoral commission’s numbers were bluntly rejected by the coalition backing former prime minister Raila Odinga. “We have evidence that the results we have received have been doctored,” Mr Odinga’s running mate, outgoing Vice-President Kalonzo Musyoka, said.