Definition of Election, doctrine of
When a third person has contracted with an agent without knowing of the agency, and thereafter the third person discovers the agency and the identity of the principal, the third person may enforce the contract against the agent or against the principal at his election, but not against both. This is known as the doctrine of election.
That's the definition of Election, doctrine of in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.