By Lucianne Limo A new opinion poll appears to suggest Prime Minister Raila Odinga’s lead over his rivals has slipped from six months ago. The research by pollster Synovate Kenya shows that while the PM is still the most preferred presidential candidate with 32 per cent, a drop of six per cent, his closest challenger, Uhuru, is now at 21 per cent, a three per cent gain, followed by Vice-President Kalonzo Musyoka and Eldoret North MP William Ruto who are tied at 11 per cent each, an increase of three per cent.