"Modi is unnerved. He and his strategists are totally frustrated, leading to dirty tricks department (of BJP) rehearsing their old allegations," Surjewala told IANS.
Priyanka herself decides on the place and timing of her campaign, said a source.
Priyanka, who has been campaigning in Rae Bareli and Amethi for over 10 days, had last week come out all guns blazing against the BJP after it released a video targeting her husband over property deals.
Some of Priyanka's anti- BJP and Modi barbs hit headlines.