Matthew Yglesias reports for Bloomberg that in September 2020, political scientists David Broockman of the University of California at Berkeley and Joshua Kalla of Yale paid viewers of Fox News to watch CNN for a month, and found the change altered their political views. The folks switching from Fox to CNN were then surveyed, and were found to be five percentage points more likely to believe that people suffer from long COVID-19 and six points more likely to believe that many foreign countries did a better job than America in controlling the virus. Those paid to watch CNN instead of Fox were seven points more likely to support voting by mail than the regular Fox-viewing control group. And those paid to watch CNN instead of Fox News were 13 points less likely to agree that if Biden were elected, “we’ll see many more police get shot by Black Lives Matter activists,” than the regular Fox News viewers. A seven-point increase in supporting voting by mail may seem like a lot, but only 24 percent of the CNN switchers in total said they supported voting by mail. Of course, the viewers only watched CNN for one month, so there could have been greater deviations if the channels stayed changed. Read more about this story at Bloomberg News.