Congress is contesting on 91 seats in the assembly elections.
Earlier, the PM addressed a rally in Puducherry on 25 February.
Hosabale was handling the responsibility of joint general secretary since 2009.
Elections will be held from March 27 to April 29 in West Bengal.
The ruling party Trinamool Congress (TMC) has announced candidates for 291 seats on Friday.
Actor Arun Govil, known for playing the role of Lord Ram in the TV serial 'Ramayana', has joined BJP today.
PM Modi's first rally will be held in Purulia today.
In the manifesto, Rs 1,000 has been promised as widow pension.
He had recently tested positive for COVID-19.
Mandi MP Ram Swaroop Sharma allegedly died due to suicide.