"The Congress can deliver its promises in Delhi," said Maken, who is contesting from the Sadar Bazar constituency.
"We have confined ourselves in raising real issues. Unlike other parties, we have not resorted to petty politics."
Former Delhi chief minister Sheila Dikshit told reporters that in this election, leaders are talking less about programmes mentioned in their manifestos.
"No, it may be your perception (regarding the Congress being in the election race) but the time has changed ... and the Congress is very much in the race," she added.