The Jharkhand unit of Congress on Monday lodged a complaint with the Election Commission, alleging that BJP president JP Nadda violated the model code of conduct by "canvassing" his party's Mandar bypoll nominee at a tribal rally, which was scheduled to be a "non-electoral" program. Addressing the 'Dharti Aba Birsa Munda Vishwas' rally at Ranchi’s Morabadi ground on Sunday, Nadda attacked the JMM-led coalition in the state and gave a clarion call to oust the dispensation, which is headed by someone who has become "synonymous with corruption".