DAP national adviser Lim Kit Siang has warned of a campaign to get Pakatan Rakyat representatives to defect following Umno's backing of Selangor Menteri Besar Abdul Khalid Ibrahim.

Lim said this is based on the scenario where a coalition of 12 Selangor Umno assemblypersons, 15 PAS assemblypersons and Khalid would already comprise exactly half of the 56-member House.