While preparing for the debate, Leslie is nervous. Ben then measures the podium, informing her that it is 4ft. Exactly the same size as her podium at city hall. A reference to another Indiana film, Hoosiers (1986).
As Ron climbs the telephone pole, he sings "Wichita Lineman," a song inspired by telephone pole maintenance crew (linemen). That song would later be nearly used in Guardians of the Galaxy (2014), which also stars Chris Pratt.
During the debate Bobby Newport (Paul Rudd) presumably answers that his favorite Bond is Daniel Craig before changing his mind to Timothy Dalton. In his 2009 film "I Love You, Man" (also starring Rashida Jones), when told to pose as James Bond, he chooses Timothy Dalton's iconic look
Andy describes the movie "Rambo] in the closing. Chris Pratt would go on to star with Rambo himself, Sylvester Stallone, in Guardians of the Galaxy Vol. 2 (2017).