It’s been proven in my blog to some degree that any sort of bias by PolitiFact (PF) in its rulings can’t be proven through “a preponderance of anecdotal evidence.” Because (1) some of that preponderance is clearly arguable, as I have shown in Lil White Lies, and (2) the evidence of bias can go both ways, as I have shown in Grading PF Liberal Style, as well as in my Guide to PF Detractors, which lists those alleging PF of bias on both sides of the aisle.
In my many searches for items to add to my Guide to PF Detractors, I occasionally look at comments, to see if someone has anything original to say (generally it’s run of the mill). Here were two, however, that really offer some different approaches to determine bias by PolitiFact.
They come from an article by David Brauer at MinnPost.com who was critiquing Bill Adair’s response to Eric Ostermeier’s study in which he suggests that PolitiFact writers may be using “selection bias” in choosing statements for review. (I reviewed Ostermeier’s numbers, comparing them to mine, and found that his Republican “negatives” were somewhat higher in his database of 512 rulings as compared to my database of 1,330 rulings on current and former office-holders.)
Here’s the first one written by Mark Gisleson: (emphasis added)
Politifact isn't biased by party, they're biased in an establishment way. That's why Bachmann does badly by them, but so do people like Alan Grayson who they often parsed to death.
They also cannot differentiate between politicians who skillfully dissemble, as opposed to politicians who equivocate themselves into gray areas.
They would do much better if they placed every politician's statements in the context of their party's political agenda. If a misstatement serves their agenda, it should be graded more harshly because it's fair to assume that lies that benefit the cause are deliberate.
I’ve already noticed that my conservative counterpart might be aware of this, because, in his Grading PolitiFact critiques, he often seems to deliberately and assiduously avoid placing the argument in the context of the (Republican) party’s political agenda. An excellent case in point is a PF ruling on Ann Coulter reviewed earlier this year where, following the tsunami-nuclear reactor incident in Japan, she claimed to Bill O’Reilly that radiation was good for you. Bryan’s argument that she didn’t deserve a “False” from PF was that the context of Coulter’s argument was the media’s over-reaction to it, when the fact was, as I showed, they seemed to be under-reacting, if anything, and the real context was the Republican party’s promotion of nuclear energy, ergo, Coulter’s claims about radiation. Bryan didn’t say anything about the Republican advocacy of nuclear energy.

