To the title question, Mr. Heston would give a qualified No. There are, he says, "far more young conservatives among actors and writers and directors now," and Hollywood does respond, though slowly, to public pressure--so that, as Mr. Buckley puts it, "a depiction of a minister or a priest doesn't have to show him as a bigamist or an adulterer or a sodomist." Still, Hollywood is a left-wing place.