Khanna has been elected thrice to the Gurdaspur Lok Sabha seat.
Salman, who started his roadshow from the airport in an open jeep, said Khanna was like an elder brother to him.
"Vinod Khanna is like an elder brother to me. I have come here to campaign for him because he has been so dear to me and because he believes in delivering the goods," he told reporters here.
Salman also said that Khanna's dedication to the human cause in the film industry put him in high esteem.
"Vinod Khanna has built five bridges, one civil airport and brought unseen development to Gurdaspur and certainly deserves another stint as an MP in Gurdaspur," he added. (ANI)