The funnywoman, 61, ran as the official nominee for the Peace and Freedom Party and racked up more than 65,000 votes after appearing on the ballot in California, Colorado and Florida.
She admits garnering enough votes to get her into the White House remains a long shot, but she is refusing to rule out another political campaign for 2016.
She tells the New York Daily News, "I might keep running till I win. I definitely can win - it's a possibility, it's not a probability but it's a possibility. If you can make it to the ballot, you can win."
Barr's 2012 campaign efforts were documented by director Eric Weinrib, who has turned the footage into a new film.