This split among the most popular hosts isn't helping the Republicans, making it harder for the conservative base to fall in behind a single candidate. But if Trump is acceptable to the loudest voices of talk radio, he's acceptable to the listeners, too -- and that's why Kaminsky is getting those angry emails and calls.

"They may come to regret it later, but they may not," Kaminsky says of his federally-famous colleagues who have chosen not to attack Trump. "If Trump becomes president, there will be a lot to talk about. Now, the country will be going to hell in a handbasket, but there will be a lot to talk about."

I can't help thinking that's the case with the mainstream media, too. There's no way around it: Trump is entertaining and fun to talk about. The ensuing airtime has made him more acceptable as a potential President than he should ever have been.

Talk radio was set up as an alternative to the liberal mainstream. With Trump, though -- perhaps because it's so highly commercialized -- it has fallen into the same trap as the mainstream of tempting Americans to merge entertainment and politics in the important business of choosing who should run the country.

David Fuller's view

I will let venerable Charlie Munger, vice chairman of Berkshire Hathaway respond.

On Trump: “My attitude is that anybody who makes money running a casino is not morally qualified.”

On Sanders: “I don’t think he’s any worse than some of our Republicans.  But at least they’re crazy in a different way.”