Grassroots is a 2012 American film directed by Stephen Gyllenhaal, based on the book Zioncheck for President by Phil Campbell.
The film tells the story of Phil Campbell Jason Biggs, a journalist who has just lost his job and gets roped into leading Grant Cogswells political campaign. Grant, played by Joel David Moore, is Phils enthusiastic friend whose passion for the monorail inspires him to run for Seattle City Council. Grant is running against Richard McIver, played by Cedric the Entertainer, and although McIver has more money and more supporters, Grants blind passion paired with Phils strategy makes Grant a contender.
Source: Wikipedia