Max Ehrenfreund points to an interesting tidbit this morning. A pair of researchers have released a working paper that attempts to figure out if watching Fox News makes you more conservative. They do this by exploiting the fact that channel numbers on cable systems are placed fairly randomly throughout the country, and people tend to watch channels with lower numbers. Thus, in areas where Fox has a low channel number, it gets watched a little bit more in a way that has nothing to do with whether the local viewers were more conservative in the first place. So does randomly surfing over to Fox News tend to make you more right-wing? Yes indeed! "We estimate that Fox News increases the likelihood of voting Republican by 0.9 points among viewers induced into watching four additional minutes per week by differential channel positions."