In a major jolt to Mamata Banerjee, Mukul Roy's son Subhrangshu along with two Bengal legislators and 50 Trinamool Congress councillors joined the Bharatiya Janata Party on Tuesday. Addressing a press conference, Mukul Roy and BJP's Bengal in-charge Kailash Vijayvargiya said that Bijpur TMC MLA Subhrangshu Roy and a legislator each from the Congress and CPM joined the saffron party along with 50 councillors. CNBC Awaaz is India’s number one business channel and an undisputed leader in business news and information for the last ten years. Our channel aims to educate, inform and inspire consumers to go beyond limitations, with practical tips on personal finance, investing, technology, consumer goods and capital markets. Policymakers and business owners alike have grown to trust CNBC Awaaz as the most reliable source with its eye on India’s business climate. Our programming gives consumers a platform to make decisions with confidence. Subscribe to the CNBC Awaaz YouTube channel here: https://goo.gl/g3rzrW Follow CNBC Awaaz on Twitter: https://twitter.com/CNBC_Awaaz Like us on our CNBC Awaaz Facebook page: https://hi-in.facebook.com/CNBCAwaazIndia