"Narendra Modi is capable of becoming the prime minister of the country... he is fit for it," Swaraj told reporters at the airport, responding to a query.
Swaraj arrived here for campaigning and will be addressing two rallies of which one will be in Vadodara while another at Dabhoi town.
"BJP will make a hat-trick by winning the Gujarat assembly elections for the third time in a row," Swaraj said.
She also said that "Congress will be defeated in the parliamentary election scheduled to be held in 2014".