If it’s Sunday, it’s Melissa Harris-Perry … and Meet The Press. The two shows won best hour and best day, respectively, on Cable News.
Meet The press needs an asterisk, of course, in that it is shown not only on Cable but on traditional broadcast stations as well, and it is impossible to separate tweets that were generated from the respective showings, but it doesn’t take a large leap of faith to believe that the Melissa Harris-Perry show also won best day purely on Cable News, given her 4617 mentions throughout the day (compared to MTP’s 5594).
The runners-up to MHP for best hour were an interesting group: Parts Unknown missed 1st place by 5 tweets while Last Week Tonight, Melissa Harris-Perry (the 10 am hour), and both hours of Up with Steve Kornacki followed after that:
Raw data for the day: