"If MPs chose me, I will not back out," he said.
Gandhi is leading the Congress campaign for the Lok Sabha elections but has not been projected as the prime ministerial candidate by the party.
In an oblique attack on the BJP, Gandhi said there was need of secular harmony in the country for rapid growth.
"In five years we will overtake China's economy, but this target can be achieved only when there is brotherhood among people. If Hindus and Muslims are fighting, if people of Maharashtra are fighting with people from Uttar Pradesh, then we will not progress," he said.
Growth was possible only when there was partnership between the poor and the industrialists, and that the Congress aimed at creating that partnership, he added.
