EVEN FOX NEWS…. I guess we’ve reached a tipping point. This morning, Fox News’ Megyn Kelly was downright indignant, on the air, about the McCain campaign’s dishonesty. Yes, I was surprised, too.

McCain campaign spokesman Tucker Bounds, as is his habit, started lying about Barack Obama’s tax plan. Much to my surprise — and Bounds’ — Kelly interrupted, and said Obama wouldn’t raise taxes on middle-class families.

Bounds pushed back, but Kelly pressed further: “[Y]ou guys have suggested he’s going to raise taxes on the middle class and virtually every independent analyst who took a look at that claim said that’s not true. He’ll raise it on people making $200,000 or $250,000, but not the middle class.”

When Bounds said Kelly was giving Obama a lot of credit, she replied, “I’m not giving him any credit. I’m saying what the independent analysts say. They say that claim is false. And if that’s false, why would John McCain do that, Tucker? … [W]hy say he’s going to raise taxes on the middle class when he’s not?”

His back against the wall, Bounds justified his bogus claims by arguing that Obama voted to raise taxes in the Senate 94 times (which is false), and saying Obama wanted to raise taxes on those making $42,000 a year (which is also false).

It’s consistent with the pattern established by the McCain campaign — caught in a lie, utilize additional lies.

Stepping back, though, Bounds probably never expected Megyn Kelly to confront him with reality, or to call him out on his mendacity. If the McCain campaign’s dishonesty is even turning off Fox News, the “McCain lies a lot” narrative may be taking root after all.

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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.