NAIROBI (Reuters) - Kenyan opposition leader Raila Odinga on Sunday called for a strike to support his claim to the presidency and accused the ruling party of "spilling the blood of innocent people", despite growing pressure on him to concede election defeat. The election commission on Friday declared incumbent Uhuru Kenyatta winner of the presidential poll by 1.4 million votes. International observers said Tuesday's election was largely fair but Odinga disputes the results, saying it was rigged. He has not provided documentary evidence. "Jubilee have spilt the blood of innocent people.