The couple, who were expelled from the BSP earlier this month, had pleaded guilty before the court.
Besides, an FIR has been lodged against Nandi for violating the Model Code when he came to the city at the head of a procession on March 25.
A prominent city-based businessman, Nandi has been carrying on an intensive publicity drive over the radio and TV channels for a long time, much before the general elections were announced.
Meanwhile, both Nandi and former Test cricketer Mohd Kaif, who has been fielded from the adjoining Phulpur constituency, formally joined Congress at a function organised by the party's district unit yesterday.
