District and Sessions Judge Navneet Kumar Pandey passed the order preventing Singh's arrest till May 19 after he filed an anticipatory bail application.
A lower court had issued arrest warrant against Singh in connection with two FIRs, including one charging him with sedition, lodged at different police stations in the district.
The judge adjourned the hearing on the anticipatory bail plea of Singh till May 20.
The relief comes days after the Election Commission (EC) had granted interim stay on his arrest till the hearing of his anticipatory bail application.
The district administration has lodged two FIRs against Singh and his supporters for allegedly breaking barricade on April 15 and another for challenging the EC's impartiality in a poll speech made after filing of nomination by former Chief Minister Rabri Devi from Saran parliamentary seat on April 12 last.
In his speech Singh had reportedly accused the EC of having failed to ensure voting by poor people and exhorted his supporters to cast multiple votes.
The RJD leader was later booked in two more cases for intimidating District Magistrate Kundan Kumar and violation of Model Code of Conduct.