‘WHERE ARE THE ADULTS?’…. The Politico item on yesterday’s primary results was interesting, if for no other reason because it offers a sense of the deep frustration within the Republican Party establishment about the decisions of its base.

[T]he Delaware results, in particular, were a shock to Republicans who were previously able to find some plausible explanation for why one of their incumbents or top candidates had taken a loss. Castle, unlike Sens. Lisa Murkowski and Robert Bennett, went after O’Donnell aggressively, exposed some damning information about what Rove called her “checkered background,” and hadn’t been the target of notable dissent within the state party.

But voters shrugged their shoulders.

“People didn’t care,” lamented one GOP strategist involved in the race, referring to the reaction to reams of oppo research on O’Donnell.

Well, no, they didn’t. But that’s largely the result of the Republican Party telling its most loyal voters not to care about substance, and to prioritize ideology above all.

If nothing else, the 8 primary election defeats suffered by NRSC-favored candidates this year indicates the lack of a unified command structure within the GOP now. It has, in effect, become an uncontrolled and ungoverned party in which the powers that be in Washington are mere bystanders.

“Where are the adults?” one strategist wondered.

I know this one: they’re gone because you drove them out of the party. The adults were labeled RINO sellouts who compromised instead of fighting.

The only real surprise here is that Republicans are surprised. Frankenstein didn’t like his monster very much, but he still had to live with the consequences.

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Follow Steve on Twitter @stevebenen. Steve Benen is a producer at MSNBC's The Rachel Maddow Show. He was the principal contributor to the Washington Monthly's Political Animal blog from August 2008 until January 2012.