The important thing is he is not liberal.
In this case, it looks as if he dug up some dirt on a "supposed" leader of the conservative movement who was acting in very UN-conservative ways, i.e., how could ANY conservative back Spector?
And making deals with unions? That's hardly something one would expect from a supposed conservative leader.
If we conservatives, libertarians, etc., don't clean up our own house, then how can we be expected to have the moral authority to go after corrupt democrats, liberals, etc?