As Herman Cain’s sexual-harassment controversy enters its fourth day, the Republican campaign seems to be spending less time addressing the questions and more time in a desperate search to find someone to blame.

First, the accusations were the media’s fault. Then it was liberals’ fault. Then it was racists’ fault. By late yesterday, it was Rick Perry’s fault.

A defiant Herman Cain accused Gov. Rick Perry of Texas, a Republican rival, of orchestrating a smear campaign to destroy his presidential candidacy, as additional accusations emerged Wednesday that Mr. Cain made unwanted sexual overtures to women while he led the National Restaurant Association more than a decade ago. […]

He accused a top political adviser to Mr. Perry of leaking details of one allegation, saying the adviser learned of it while working for Mr. Cain’s failed bid for the Senate in 2004.

The Perry campaign denied being the source of the story (it suggested the Romney camp was responsible) and neither Cain nor his team could offer any proof to substantiate the claim.

At this point, I’m not even sure why this part of the blame game matters anymore. Politico reported that Cain was accused of sexual harassment, and regardless of who first tipped the reporters off to the allegations, Cain really was accused of sexual harassment. Blaming the media, liberals, racists, and/or Perry doesn’t change the underlying facts, nor does it explain why Cain’s version of events has changed so dramatically over the course of a couple of days.

Wildly pointing fingers is absurd. If Cain’s accusers are lying, then they’re to blame; if Cain sexually harassed those women, then he’s to blame. He either committed these misdeeds or didn’t. What difference does it make who tipped off Politico?

Also note, after an off-hand comment made by Cain’s campaign manager, there’s apparently yet another incident in the mix.

POLITICO has learned that the incident involved a staffer for Steve Deace, an influential conservative talk radio host who hosts a nationally syndicated show in Des Moines. And Deace says he did take offense.

Deace, who penned an opinion piece critical of Cain earlier this month, told POLITICO in an email that Cain said “awkward” and “inappropriate” things to the staff at his station.

“Like awkward/inappropriate things he’s said to two females on my staff, that the fact the guy’s wife is never around … that’s almost always a warning flag to me,” Deace wrote.

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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.