Trump’s ‘Passions and Interests’

Over at Public Discourse, political scientist Carson Holloway argued that Republicans should stop treating Trump's supporters as irrational. Those supporters are acting in their own interests, as they assess them, and anyone who wants to woo them should appeal to those interests. Appeal to principles will not do the job. Political realism is required. Holloway thinks that the Founders, who understood the power of interests, would have agreed.
Trump himself is, of course, unprincipled. He acts in his own interests without much regard for moral constraints or enduring or universal principles. He is uncivil, casually throwing around epithets such as "liar," "choke artist," "goofy," and "fool." He is famously sexually incontinent. He was for abortion before he was against it. And so on.