The Congress is allowing disruptions by its MPs over Telangana in parliament in order to "pass what (bills) they wish to", the CPI-M said Thursday.
It was also important for non-Congress, non-BJP parties to have an "alternative policy trajectory" as their leader and not an individual that would be their future prime ministerial candidate, it said.
An editorial in the party's journal "People's Democracy" found fault with the Congress-led government on the manner the ongoing parliament session had been organised.
It said the Congress' aim was "to use this session more as a launch pad for its election campaign, rather than to transact business to implement important, long-standing, pending legislations...
"The way the first day of the session has unfolded has only confirmed this."
The Communist Party of India-Marxist did not spare the Bharatiya Janata Party too.
"The manner in which the BJP acted on the first day confirmed its own efforts to use this session likewise, to launch its election campaign.
"It is therefore most likely that this session will end without transacting any business that could have provided the much needed relief for our people."
The editorial said this was why 11 "secular opposition parties" including the Left, the Samajwadi Party, Janata Dal-United, Biju Janata Dal and the AIADMK had come together in parliament.
The disruptions by rival factions of Congress MPs from Andhra Pradesh over Telangana "appears to be in accordance with the Congress party's game-plan to have the parliament face continuous disruption.
"In the ensuing din, the Congress and the government appear intent to pass what they wish to and to use the other proposals to convey an impression to the people that while they are sincere to further peoples' interests, they are being prevented to do so.
"This they hope will fetch them some electoral dividends."
It said while the 11 parties which have come together in parliament had no pre-electoral front, they would nevertheless arrive at an electoral understanding in various states.
"The current political churning in the country must take a direction of an alternate policy trajectory in the interests of ... our people."