West Bengal Chief Minister Mamata Banerjee and her new political comrade, Samajwadi Party supremo Mulayam Singh Yadav, sent Lutyen's Delhi into a spin on Wednesday evening after they announced a list of three candidates for the Presidency that included the name of Prime Minister Manmohan Singh — the other two being the former President, A.P.J. Abdul Kalam and the former Lok Sabha Speaker Somnath Chatterjee.