NEW DELHI (Reuters) -Opposition leader Rahul Gandhi said on Wednesday India's electoral system suffers from "serious discrepancies" and he pledged to continue challenging its integrity through public mobilisation and potentially the courts.

Amid a ‘vote chori’ row, the BJP claims Sonia Gandhi was added to the electoral rolls before acquiring Indian citizenship, while the Congress defends her, attributing the registration to the Election Commission's actions.

Dozens of Indian opposition leaders were detained in New Delhi on Monday as they shouted slogans, jumped barricades and marched to the Election Commission in a rare public protest against what they say are electoral malpractices.

Rahul Gandhi met with a group of Bihar voters who were wrongly declared dead by the Election Commission and removed from electoral rolls. These voters shared their experiences and are seeking to regain their voting rights through the Supreme Court.

Congress MP Rahul Gandhi on Tuesday relaunched a fresh attack on the Election Commission of India (ECI), a day after all INDIA bloc parties protested over the alleged voter fraud in the national capital.

Rahul Gandhi has repeated his criticism of the Election Commission - that it colluded with the ruling Bharatiya Janata Party to commit voter fraud in Karnataka and Maharashtra last year, and is preparing to do the same in Bihar later this year.