Mr. Ali Munyi died last evening in a bus that he was traveling in from Mombasa to Nairobi.
Munyi is said to have died on his seat as the bus raced past Machakos area towards the city. Police say the MCA had three pain killers in his pockets and he was traveling to the city for party issues.
He lost in the just concluded ODM nominations and was travelling to fill forms as an independent candidate.
The body was moved to the City Mortuary.