No other candidate contested against the cricketer-turned-politician during the polls in Lahore yesterday.
Khan told the media that no one will be eligible to hold the post of the chairman of the Pakistan Tehrik-e-Insaf for more than two terms.
Such a measure will ensure that the party is not controlled by one family, he said.
He also called for intra-party polls in other political parties to end politics of dynasty.
Khan said his party is will hold discussions on seat adjustments for the general election with the Jamaat-e-Islami after holding a rally in Lahore on March 23.
Referring to the general election to be held on May 11, Khan said it would be a day for getting rid of "cruel and corrupt" rulers.
He demanded the immediate establishment of a caretaker set-up to ensure free and fair polls.