Sources said that Choudhary also briefed Nitish about his Delhi visit, during which he met several leaders of the NDA and held deliberations on important issues.
The EC also announced a bypoll for the legislative council seat vacated by former chief minister Nitish Kumar following his election to the Rajya Sabha.
Kishor also criticised CM Samrat Choudhary over government expenditure, alleging extravagance despite Bihar being one of the poorest states in the country.