Sharma has served as chief whip of the party in the Rajasthan Assembly. Vivek Dhakar will be the party's candidate for the bypoll to the Mandalgarh assembly seat in the state.
Pradesh Congress Committee chief and former Union minister Sachin Pilot had unsuccessfully contested from the Ajmer constituency in the 2014 general elections.
Besides, a by-election will be held in the Alwar parliamentary seat on January 29. The Congress has already nominated Karan Singh Yadav, a former MP, as its candidate for it.
BJP has also released its candidates list.
As far as the party in the Centre BJP is concerned, it has fileded Rajasthan Cabinet Minister from Alwar Jaswant Singh Yadav and party leader from Ajmer Ramswarup Lamba.
Shakti Singh Hada from Kota will be the BJP's candidate for the Legislative Assembly constituency polls in Rajasthan's Mandalgarh.