Also, with Bharatiya Janata Party and AAP both trying to occupy the political space created by a weakened Congress, the party will launch more fervent attacks on Narendra Modi in coming days.
"Arvind (Kejriwal) has been targeting both the Bharatiya Janata Party and the Congress. The party will make this a major poll issue with which it can target both the parties over the corruption issue. The party will also add this in its poll manifesto," said a party leader.
"Just see how Arvind (Kejriwal) and the party raise the issue after April 1 when the new rates for the gas will be implemented. This is an issue with a pan-national appeal.
"We will make it more difficult for both the BJP and Congress over the issue," another party leader added.
Before the AAP-led government resigned this month, it had ordered the Anti-Corruption Branch to register an FIR against Reliance Industries Chairman Mukesh Ambani and Union Petroleum Minister Veerappa Moily over irregularities in pricing of gas from Krishna-Godavari basin.
Arvind Kejriwal had even alleged that the BJP and Congress had colluded to bring down his government after he registered an FIR against Mukesh Ambani. The former Delhi Chief Minister has also written letters to Modi and Congress Vice-President Rahul Gandhi asking them to come clean over the issue.
"The party has been more careful about the words used in the letters to both Narendra Modi and Gandhi. It reads like Kejriwal is asking questions over the gas issue, but also covers a host of other pricking issues like party funds," a party source said.
Attacking BJP's Prime Ministerial candidate Narendra Modi will also be a major strategy for the party.
"The Congress is a not a force in Delhi anymore, but we have to counter the Bharatiya Janata Party here", a party leader said.
Apart from it, there are states like Rajasthan, Uttar Pradesh, Punjab where the Bharatiya Janata Party is strong and even we are trying to make inroads there. In states like Haryana where the BJP is not a strong force, but its chances have brightened because of Modi. Hitting out at Modi can help us to bag those anti-Congress votes, which can go to the Bharatiya Janata Party," he said.
The party too has launched an all out attack on Narendra Modi on all fronts -- right from party leaders' speeches to social media. The attacks have increased especially after Kejriwal resigned as the Chief Minister this month.
Interestingly, it has not only been raising the gas pricing issue, but it has been attacking the Gujarat Chief Minister over the issue of corruption and governance.
The party has been slamming Narendra Modi for retaining "tainted and corrupt" ministers in his cabinet and also supporting former Karnataka Chief Minister BS Yeddyurappa, a staunch Modi supporter who recently rejoined the party.
Even senior party leader Yogendra Yadav launched an attack on Naendra Modi over the killing of former Home Minister Haren Pandya.
"Who killed BJP leader Haren Pandya, Gujarat's Ex home minister Will his family ever get justice after a 11 year wait he asked.
The High Court overturned the conviction of those framed by Gujarat Police. Why no reinvestigation so far Who killed Pandya
Haren Pandya assassination: Gujarat HC passed strictures against shoddy investigation. No Re-Inquiry yet. Who is afraid of the truth coming out" Yadav had said in a series of tweets on February 19.