Charles Krauthammer, on Fox News last night:
"Trump is the Al Sharpton of the Republican party -- provocateur and clown. Unserious. I think he's going to harm the party if he runs for the same reason that Sharpton harmed the Democrats.
In the debates, he'll be up there.... like Sharpton, he's going to monopolize the discussion, draw it away on issues that are irrelevant like Obama's birth, and that can only hurt the party."
Video via The Weekly Standard.