Dear sachin. IN 1984 BJP won hanamkonda seat ( in andhra pradesh) in which former chief minister of andhra pradesh p.v. narsimah rao was defeated by BJP candidate P.J. REDDY and Mehsana Constituency in Gujarat which was won by Dr. A.K. patel. well as long as the second part of your question is concerned... how they won it.... the people of hanamkonda we sick of curreption by mr. narsimah rao, further Dr. A.k. patel won his seat as he was only capable and popular candidate in his constituency. hope i answer your question.