I don't know who said that 'politics is show business for ugly people' -- perhaps it was the same wit that spoke of faces 'perfect for radio'.
But clever as it is, it's dated now. It's not true any more, is it? Show business people have for many years been into politics, not just as activists doing their bit on the side but as actual, portfolio-holding, elected politicians. There are no longer clear lines between vocations and fields of passion. Nobody feels any longer that to be loved as an entertainer -- or any other famous figure -- you must never muddy the waters with political commitment and outspoken attitudes. Indeed, apolitical geniality seems to be out. These days, if you kept quiet on matters of importance -- Brexit, the American presidency, or whether Chick-fil-A should be allowed to close on Sundays -- the public and its media shepherds would be more likely to paint you as a mouth-breather who reads books on Twitter.
Far from being show biz for dowdy unknowns, politics is where the Hollywood types and high-flown academics aspire to go -- and show biz is the new apprenticeship for politics.