Cooping was a practice in the United States during the 19th century by which unwilling participants were forced to vote, often several times over, for a particular candidate in an election. Generally these innocent bystanders would be grabbed off the street by so-called 'cooping gangs' or 'election gangs' working on the payroll of a political candidate, and they would be kept in a room, called the "coop", and given alcohol or drugs in order for them to comply. If they refused to cooperate, they would be beaten or even killed. Often their clothing would be changed to allow them to vote multiple times. Sometimes the victims would be forced to wear disguises such as wigs, fake beards or mustaches to prevent them from being recognized by voting officials at polling stations.
- Marcotte, Frank B. (2005). Six Days In April: Lincoln And The Union In Peril. Algora Publishing. p. 27. ISBN 978-0-87586-314-6.
- Walsh, John Evangelist. Midnight Dreary: The Mysterious Death of Edgar Allan Poe. New York: St. Martin's Minotaur, 2000. p. 32–33. ISBN 0-312-22732-9
- Peeples, Scott (2007). The Afterlife of Edgar Allan Poe. Camden House. p. 157. ISBN 978-1-57113-357-1.