Congress vice president Rahul Gandhi will address a party rally in Mangolpuri in northwest Delhi on Sunday.
Delhi's Chief Minister, Sheila Dikshit, briefing media on Saturday, said the party is working hard to make the rally a success.
"This is the first rally by Rahulji here in connection with the (December 4) elections. We are expecting a very, very huge crowd," Dikshit said.
"We have made all arrangements for the rally. We are confident that it will be a very successful rally," she added.
All senior Delhi Congress leaders, including Members of Parliament, are expected to attend the event.
On Saturday, the Congress Party hit back at BJP's prime ministerial candidate Narendra Modi for targetting the Gandhi family, saying people of the country are aware of their sacrifices for the nation.
Congress leader Girija Vyas said every political leader has the right to participate in elections and hold rallies, but he or she should not cross the level of decency while doing so.
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"I think what he said even the people of the country will not like because this family has given so many sacrifices for the country," said Vyas.
"The entire country is aware of the sacrifices made by the Nehru- Gandhi family for the country's welfare," she added.
Vyas said it is the UPA, which has worked for the benefit of tribals.
Addressing a rally in Udaipur, Modi had said the patriotism of the tribal communities inspires us even today.
"If we look at 1857 rebellion, history is testimony to the fact that tribals were the first to challenge the British. Their patriotism and sacrifice still inspires us," said Modi.
"People remember Jallianwallah Bagh, but people of the region have not acknowledged their role in their fight against the British. Rana Pratap spent his life in this region, preparing for his wars," he added.
Modi alleged that Rahul Gandhi did not trust the Ashok Gehlot-led Rajasthan Government.
" Rahul Gandhi came to ask for support for Ashok Gehlot, but the question is does he trust Ashok Gehlot? Does he trust his own Chief Minister? If he did, he would not have gone to Gopalgarh without informing him," said Modi.
"Let me ask you: can you trust the Chief Minister that 'Shahzada' doesn't have faith in?" he added.
Modi said the Congress arrogance has reached its limits.