Jan Suraaj Party (JSP) founder Prashant Kishor defeated the BJP’s Neeraj Kumar Sinha in the Bankipur Assembly bypoll on Monday, sending shockwaves across Bihar politics. Advertisement3) Cracks in BJP, RJD basesA major factor that fuelled Kishor’s win could be attributed to wide cracks that surfaced in the support bases of both the BJP and the principal Opposition RJD. While only the upper caste Kayastha community consolidated behind the BJP, sections of other upper caste and OBC voter groups swung to Kishor. A section of Muslims deserted the RJD for Kishor because they saw his winning potential against the BJP. 4) PK’s issue-based campaignDuring his campaign, Kishor stuck to his core issues such as education and jobs and civil matters, rising above the traditional issues of caste and religion.