Odumbo’s religious beliefs before he was elected are the same as they are now, he believes in marxism and is a communist.
As to the original question as to whether or not I would vote for an atheist if I agreed on their policies, the answer is “yes”.
Odumbo and his marxists beliefs are not atheistic, they are ANTI-theistic. There is a big difference between saying that there is no God (atheistic=foolish) and that there is no God and you cannot have a belief in God (anti-theistic=evil).
Normally your “atheistic” is known as agnostic.