Another Samajwadi Party leader, Subhash Rai, joined the BJP in Delhi on Monday in the presence of Uttar Pradesh Deputy CMs Keshav Prasad Maurya and Dinesh Sharma and state BJP chief Swatantra Dev Singh ahead of UP Assembly polls. Rai is MLA from the Jalalpur constituency. This comes after SP founder Mulayam Singh Yadav's daughter-in-law Aparna Yadav joined BJP.