Remember that PolitiFact offers no objective means for distinguishing between the two ratings.
FALSE – The statement is not accurate.
PANTS ON FIRE – The statement is not accurate and makes a ridiculous claim.
Only during PolitiFact's first year did PolitiFact's use of the "Pants on Fire" rating fail to favor Democrats. It's well worth noting that PolitiFact editor Bill Adair has since said that the "Pants on Fire" rating started out as a lighthearted joke. That explains why Joe Biden received a "Pants on Fire" rating for saying President Bush was "brain-dead." And it may also explain the anomaly in PolitiFact's partisanship for 2007.
This year's numbers carry a couple of implications for the popular theories PolitiFact's defenders bring to bear against criticisms of the fact check organization.
The ratings reflect reality, which is biased to the left
Figuring the numbers for state operations into the total obliterates the PoF Bias number trend for PolitiFact national. So Democrats from Tennessee don't lie more, but when they lie look out 'cause it's likely to be a gigantic whopper? Who buys it?
State franchises produce numbers all over the map. At least with respect to the application of the "Pants on Fire" rating, this is more consistent on its face with the numbers reflecting something about the individual PolitiFact operations, not differences in political truth-telling from state to state.
The Republican primary explains the focus on Republican statements, and its contentiousness explains the harsh ratings
The PoF Bias number came down slightly in 2011 and 2012 compared to the previous two years. The primary season offers no obvious explanatory value at all with respect to "Pants on Fire" differentials.
The simple, parsimonious explanation for the data comes from the ideology of the PolitiFact staff combined with the flow of news.
Given the wide variation among the state franchises, it is astonishing (without employing the theory of journalistic bias) for PolitiFact to obtain the consistency it has achieved over the past three years in using the "False" and "Pants on Fire" ratings on claims from Democrats. The recent three year trend resembles a quota.
PolitiFact is biased. The bias in the application of the "Pants on Fire" rating is just one example of it.