Informed Sources: Republican Rancor

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The "Beat Lamar" folks are furious at Tennessee's  state GOP chairman Chris Devaney over two incidents, which they say violated the party's bylaws by endorsing Lamar Alexander.

Meanwhile, Tennessee's junior senator causes a stir to his right with a tweet Thursday night against efforts by some in his own party to defund Obamacare.

Why are Republicans eating their young? Or is it the other way around?