Yadav, who recently floated a new political outfit after being expelled from the RJD by his father, had been in the fourth spot after the eighth round.
The online release of the movie trailer on April 10 led to objections from some Brahmin groups who claimed that the community is portrayed in poor light.
The lawsuits follow accusations made by the AAP leaders, alleging Dikshit accepted “crores of rupees” from the BJP to undermine AAP’s electoral prospects.
