Liberals argue that the conventional definition of "news source" used in studies of journalism should be broadened to include opinion programs, so that conservative talk radio and Fox News commentary will be counted. If that definition is adopted, the bias is still overwhelmingly liberal. For example, the viewership of the liberal-biased network evening news is by itself more than all of Fox News and conservative talk radio combined, and when everything is totaled there is more than three times as much liberal slant in media as conservative.