Ashutosh contested on an AAP ticket during Lok Sabha 2014. Though he defeated Congress's Kapil Sibal, BJP's Harshvardhan got more seats. It is speculated that not being sent to Rajya Sabha from AAP irked Ashutosh and this may have led to the resignation.
Ignoring Kumar Vishwas and Ashutosh, Kejriwal started crisis in AAP
Earlier this year, Kejriwal nominated Sushil Gupta, Narayan Das Gupta and Sanjay Singh, for the Rajya Sabha seats, ignoring Kumar Vishwas and Ashutosh, the leaders who had been associated with the party since the Anna Hazare movement.
This move was widely criticized not only by the detractors but also by people within the party ranks.
Many said it reflected poorly on Kejriwal's politics' brand.
What Ashutosh's resignation means for AAP's LS prospects?
AAP, which was at loggerheads with L-G Anil Baijal weeks ago, is now staring at another debacle. The party was able to trump BJP and Congress during Assembly Elections partly because of leaders like Ashutosh.
Earlier, Congress hinted an alliance with AAP is unlikely before 2019. AAP's decision to abstain during voting RS Vice-President's election further dampened these prospects.