Was Nitish Kumar Sanghi in the past?  

‘’ Nitish Kumar got political existence cause of Sangh & now talks about Sangh Mukt Bharat’’  

– Apr 21, 2016 Lal Krishna Advani@_LKAdvani 

This is what one of post on twitter (now X) says  

In the photo, apparently, Nitish Kumar is offering homage and utmost amount of respect to Golwalkar. the RSS leader of yesteryears.  

If so, perhaps his return to BJP fold would be Ghar Wapsi !