Ever since the arguably skewed CNN poll of a few weeks back, conservative voters have been looking at the methodology of polling companies with an increasing amount of skepticism. The fact that most polls have used a model that tries to mimic the voter turnout in 2008, when Democrats beat Republican turnout by 7 points (as opposed to presidential elections like 2004, where turnout between the two parties was relatively even), has not improved this state of affairs.

And now, the suspicion of poll bias appears to have yet one more piece of evidence to support it. Via a tweet by anonymous poll analyst NumbersCruncher comes the following graph showing the degree of oversampling of Democrats employed by the most recent polls (all of which show Obama leading Romney):