Washington (CNN) - A documentary film lauding the career of former Alaska governor Sarah Palin is set to be shown at AMC theatres across the nation, the project's producers announced Friday. "The Undefeated," which traces Palin's political rise and paints her as the outsider who stood up against the establishment, is set to premiere later this month in Iowa and is also expected to have early showings in New Hampshire and South Carolina - all key early voting states.