It's been a "contentious, bizarre, and always entertaining primary season" so far in the world of politics, Mediaite notes in its roundup of the 25 "biggest movers and shakers" in the political media arena. And that type of season may have served as the perfect breeding ground for TV host John Oliver, who squeaked onto the list at No. 25. Mediaite calls HBO's Last Week Tonight With John Oliver show "arguably more important to the political and social climate of comedic commentary than any other" and notes that Oliver's "comedic voice is effecting real change," including shining a light on FIFA corruption and televangelism. Making up the list's top five: