The Union Minister bagged 104 votes, while his Congress rival Gaurav Pandya got 70 votes.
Speaking at the press conference, Jaishankar thanked legislators for their support to him.
"I want to thank everyone for the support. Like I said during my nomination, External Affairs Minister and Gujarat have a natural partnership. There is no such country where there is no Gujarati. If the prestige of India has increased internationally, Gujarat has a role in it," Jaishankar said.
On Friday, Jaishankar and party colleague Jugal Ji Thakor were declared winners in the by-polls conducted for two Rajya Sabha seats in the state.