Sources said quite a few national leaders are likely to fly down from Delhi and participate in the event. Mitra's joining the Congress will be a major boost for the party given that the Trinamool Congress has been tom-toming every other defection from the Congress.
Political observers feel more defections from the Trinamool will follow Mitra's joining the Congress. State Congress president Pradip Bhattacharya said, "We have organised an event near the State Congress headquarters on January 21 and directed Congress activists to be present there in large numbers. Somen Mitra will officially join the Congress there."
Mitra recently went to Delhi and met Congress vice-president Rahul Gandhi and it is at the latter's instance that his party wants to highlight the event in such a way. The return of the former president of the State unit of the Congress to the party is the beginning of disintegration of the Trinamool Congress, Bhattacharya said, adding that it will pave way for other disgruntled leaders of the Trinamool Congress to turn to the Congress.
The 70-year-old Mitra and his wife Shikha joined the Trinamool Congress ahead of the 2009 Lok Sabha elections and won the Diamond Harbour seat, riding on the pro-Trinamool wave. Even as Mitra had announced his return to the Congress, his wife, a dissident Trinamool MLA from the Sealdah Assembly constituency is not severing her ties with the ruling party, saying that she had been elected by the voters and must stay on in their interest.