Why Isn’t Anyone Trying to Take Down Trump?

Tim Alberta of the National Review reports that there are no attacks ads currently running against Donald Trump in the early primary states.

Nate Silver: “There are a lot of reasons for this — including, paradoxically, both resignation to the idea of Trump as the nominee, and conversely, a belief that Trump’s support in national polls won’t translate into winning margins in Iowa and other early voting states. But there’s another dimension to the problem too. It should have been perfectly obvious, but it became clearer to me after spending the past week in Iowa: The campaigns competing against Trump are acting in their own narrow best interests, and not necessarily in the best interest of the Republican Party.”