Ahead of state elections in Rajasthan, BJP veteran Jaswant Singh's son Manvendra Singh today quit the party, saying him joining the BJP was a mistake. "Kamal ki phool hamari bhool thi (choosing the Lotus flower was my mistake), said the lawmaker at his Swabhiman rally in Rajasthan's Barmer, who has been campaigning vigorously in his constituency ever since he announced a rally for "fight for self-respect" of voters.