Can he campaign for candidates?
Why would he want to do that? And ruin his own reputation? If I were his PR agent, I’d have him steer clear of politics. If he has his own political ambitions, there is a right time for that. He’s going to be a multi-millionaire just be accepting positions on corporate boards of directors. Not knowing anything about the private side of the man ...I’d question your question. ;-)
He ought to RUN for office! I’m glad that he went back and flew that route a few times. Gettin’ back on the horse, you know.