Mitchell’s research centers around how the atomization of the 20th century mass media system has affected news, especially on broadcast television, cable television and the Internet. He has published papers on, among other topics, Fox News’ prime-time coverage of health care reform and issue advertising before and after the U.S. Supreme Court’s Citizens United decision. Mitchell regularly presents his work at AEJMC and PCA/ACA. He has been a featured blogger for Huffington Post since 2008.