In an address to party's booth in-charges, Shah told them to approach every voter across the city with seriousness and"expose the lies" of the Aam Aadmi Party.
"This fight (Delhi polls) should not be taken lightly. There are several reasons to win this fight because there is a favourable atmosphere and we have Narendra Modi's leadership. There is no substitute for BJP in Delhi. This election is like our examination," Shah said here.
The BJP president said if it succeeds in the national capital, then the party will also gain huge confidence to wrest power in politically crucial Bihar. "If we succeed in Delhi elections.. then I am confident we will also emerge victorious in Bihar and win more than 185 seats in that state," he said.
The BJP president asked party's workers to give at least three hours to "public-approach" and apprise people about the work done by the Modi's government in the last seven months.
Severely critical of former chief minister and AAP leader Arvind Kejriwal, he said "AAP has a habit of speaking lies and we should completely expose them." I want to remind that when he (Kejriwal) became chief minister, he went to Ramlila Ground through Metro but have you seen him in Metro after that?
"Also, they (AAP) said that he (Kejriwal) would not take support of either BJP or Congress. We didn't give support to him, but with the support of Congress, he stuck on to CM's chair, and we should tell people about all these things."
Lambasting the AAP leader, Shah questioned why Kejriwal, who talks about purity in politics, goes to Dubai by travelling in "executive class" in flight to collect funds.
"He (Kejriwal) had gone to Kashi (Varanashi) to contest elections against Modiji and youths ghereod him there and asked him where he would stay and in reply, he (Kejriwal) said that he never wanted to become CM of Delhi, but what is he doing now..we should tell people about these things," Shah said.
Taking a dig at Janata Parivar, Shah said, "The so-called Janata Parivar has now gathered, but BJP workers don't need to fear it as from Janatar Parivar, Janata has gone out and now, Parivar only remains there."
Former IPS officer Kiran Bedi said the party's workers should tell people that they should elect the same party in Delhi like the one at the Centre.
"I appeal to my party's workers to go among the people and tell them that they should elect the same party, which is in the Centre due to which the development of the city will proceed at a faster pace," Bedi said.