But Trump was not having it. In a fiery retort, Trump pointed out what's perhaps the most uncomfortable fact for the Republican Party: He actually rose to the top while insulting people. In fact, Trump's insults and bluster have arguably pushed Bush down.
"I'm at 42, and you're at 3," Trump said, referring to national poll numbers. "So far I'm doing better." He added, alluding to Bush's position on the stage, which is based on polling, "You started off over here, Jeb. You're moving over further and further. Pretty soon you're going to be off the end."
This is what makes accusations from Bush, Rand Paul, and other Republicans that Trump isn't a serious candidate a bit strange. Regardless of what you think of Trump, a sizable portion of Republicans clearly like the guy. And maybe that's what should make him a threat to people in both parties.