The DYFI will on Sunday mark the culmination of its 50-day Insaaf Yatra (the march for justice) at Brigade Parade Ground here with a rally to sharpen its fight against the "communal BJP and the corrupt Trinamul" ahead of the upcoming Lok Sabha polls.

A leader of the CPM's youth wing, DYFI, said party workers and supporters had already started reaching Calcutta on Saturday afternoon mainly from north Bengal and Jungle Mahal districts.

The CPM, sources said, was trying to leverage the DYFI event as a new milestone to achieve a turnaround before the Lok Sabha polls.

This will be the first time since 2008 that the CPM has brought its youth wing to the forefront in organising a political rally at a venue considered to be the largest in the Bengal capital.

Though the organiser DYFI or the CPM announced a large turnout for the rally, multiple party leaders said Sunday's show would prove how the march of over 2,200 km across Bengal as part of the youth wing's Insaaf Yatra was successful for the Left before the polls.

"You will see the turnout on Sunday," said DYFI state secretary Minakshi Mukherjee.

Mukherjee urged people from all walks of life to join the Brigade rally on Sunday, not only to demand jobs and education for youngsters in Bengal but also to protest against the BJP’s “communal politics” and Trinamul’s “politics of corruption”.

Leaders like Mukherjee, state CPM secretary Mohammed Salim, and CPM leader Abhas Roychowdhury are among those who will address the gathering on Sunday.

A DYFI leader said that people will assemble at the Brigade Parade Ground from seven points of Calcutta on Sunday. Five big marches will start from Khidirpur, Hazra More, Subodh Mitra Square, Central Metro station and Park Circus.

However, the largest marches will start from the Howrah and Sealdah railway stations.

A DYFI delegation on Saturday night went to meet former chief minister Buddhadeb Bhattacharjee to seek his support and blessings for the success of Sunday's rally, sources said.