Oops. Sorry; not a student of the legal definitions, but it seems converting certain monies (not your personal assets) to use for personal gain (getting elected/securing more "donations") would be similar to helping yourself to the bank's money drawer contents, if you were a teller.
He simply isn’t smart enough to have embezzled anything. But he is profoundly dishonest and has an enormous sense of entitlement. What you describe is influence peddling.