Addressing a public meeting here, Kejriwal said the AAP website would be opened for donations for the next assembly polls in Delhi.
Other AAP leaders expressed confidence about the party performing well in the 2014 Lok Sabha elections.
The party won 28 of 70 seats in Delhi in its debut elections.
"We will contest the Lok Sabha elections from Kashmir to Kanya Kumari. People from other states are expressing hope of our performing strongly as we did in Delhi," said Manish Sisodia, the newly-elected legislator from Patparganj.
"We can make our 'Yuva Hridya Samrat' contest against Yuvraj," he said, indicating that party's youth leader Kumar Vishwas could be pitted against Congress vice president Rahul Gandhi in the Lok Sabha polls.
Kumar Vishwas hoped that the AAP will, in six months, be in a position to bring the Lokpal bill in parliament which activist Anna Hazare wants to be passed and implemented.
Kejriwal said he will visit Ralegan Siddhi in Maharashtra Thursday to extend support to Hazare in his hunger strike over the Lokpal bill.
He said if the BJP fails to form a government despite having 31 seats, people should regard it as a failure and not support it any further.
"We are prepared to fight the elections again," Kejriwal said.
He said the BJP and Congress should form a government as they had the numbers to notch up a majority in the Delhi assembly. The Congress has won eight seats in Delhi assembly.
"The BJP and Congress are two sides of the same coin. They have got seats and should jointly form a government," he said.
He said members who feel suffocated in the Congress and the BJP can join the AAP.
Apart from Kejriwal, the public meeting at Jantar Mantar in central Delhi was attended by other party leaders, including the newly-elected legislators.
Hundreds of AAP supporters gathered at Jantar Mantar, with many of them carrying the national flag. Some were dancing to express their happiness on the party's showing in the Delhi polls.
--IANS (Posted on 12-12-2013)