Whenever elections approach some or other leader starts talking of the third front but so far despite many attempts during the last many years it's yet to take a shape due to personal ambitions of party leaders and differences in opinions, sources say. This time also Ms Mamta Didi of TMC started the exercise and targeted Meghalaya, Tripura, Assam,Goa and UP for the first face, sources say. She has already taken Kirti Azad, Pawan Sharma, Tanwar, and some side-lined leaders of the parties in TMC, sources say. Probably meeting Sharad Pawar of NCP and Uddav Thackeray of Shiv Sena to chalk out the future course of action but in all her discussion Congress is nowhere, sources say. Congress party started criticizing TMC and the first is on extending an invitation to PM to inaugurate Bengal Global Business Summit, sources say TMC leader Saugata Roy in reply to criticisms said that TMC is not to take advice from Congress to whom to invite or not, sources say this is the start of blaming game sensing the formation of third front san Congress but looks serious attempt being spearheaded by well established and popular leader Ms Mamta Didi?