According to the sources, he wrote to TMC supremo Mamata Banerjee apprising her of his decision to resign from the party's primary membership.
The fourth phase of the Lok Sabha elections will go to polls on April 29. The voting will be held for 71 seats spread across 9 states.
According to BJP insiders, every Union minister has been given 3-4 seats to mentor and has been told to work hard on these constituencies in the next 20 months to ensure the party's victory.
Adhikari joined the BJP amid Shah's two-day visit to West Bengal ahead of the assembly elections in 2021.
The Lok Sabha election will be held in 7 phases, beginning on April 11, 2019 and ending on May 19, 2019.
This classification of districts is to be followed by states and union terrotories till a week post May 3, when the second phase of lockdown will end, for containment operations.
As the dust finally settles on the outcome of the Lok Sabha elections 2019 and Bharatiya Janata Party along with its NDA allies emerges as the clear winner, here is a list of who won in each of the 7 phases of elections.