The Aam Aadmi (Common Man) Party (AAP) made a stunning debut in the polls last month and was able to form a government for the capital with the support of the Congress party.
A meeting of the AAP national executive on Saturday discussed detailed plans and strategies for the polls, due to be held by May.
"AAP will fight the elections, contest in the maximum number of states, and in as many seats as possible," AAP leader Prashant Bhushan said after the meeting. The candidates would be selected by the end of February he said.
Another AAP leader, Sanjay Singh, said the party would not form an alliance with any other group.
The AAP was born out of anti-corruption demonstrations that took place in 2011 in support of demands by campaigner Anna Hazare for stronger anti-graft laws.
Bhushan said the AAP was already gaining support across India in villages and towns alike.
Aam Aadmi has tapped into a deep well of voter disgust with the corruption of India's old-line parties, especially the governing Congress, which most observers believe will lose the national vote this year.