The leader of Pakistan’s Tehreek-e-Insaf party gave a live-televised address, a day after tens of millions of people cast their ballots in an election marred by violence.
An official result has not yet been announced following delays in counting the votes and allegations of vote rigging.
“We were successful and we were given a mandate,” Mr Khan said.
“All our policies will be focused on bringing up the poorest segment of society.
“No political leader has ever been a victim of as many personal attacks as I have over the last few years but our mission is much bigger than me.
“I say to the people of this country today, we will govern Pakistan like it has never been governed before.”
The Pakistan Muslim League-Nawaz (PML-N), the party of jailed ex-prime minister Nawaz Sharif, has called the count an “assault on democracy” in a country which has a history of military rule.
The election was hit by violence after a suicide bombing outside a polling station in Quetta on Wednesday killed at least 31 people – including five policeman and two children. (Courtesy SKY News)