Kumar, who broke away from NDA over the elevation of Narendra Modi, said he could not see the so-called wave in favour of the BJP's prime ministerial candidate.
RJD saw a major upheaval yesterday with 13 out of its 22 MLAs quitting the party. But six of them later returned and denied walking away from the party.
Earlier in the day, RJD chief Lalu Prasad accused Kumar of hatching a conspiracy to break his party.
"Nitish hatched a conspiracy with the speaker to break my party. But, it went wrong and the whole country has seen the conspiracy," Prasad said.
