“Long Shot” has Charlize Theron plays 40ish Secretary of State Charlotte Field, who is also planning a presidential run for the White House. Seth Rogen’s Fred Flarsky is the political journalist whom Theron hires to be her speechwriter, in part because she babysat him when she was in her teens. The slogan for the film reads “unlikely but not impossible.” At least they are in admittance that a story such as this one would be highly unlikely in the real world, right?