Without considering the hindupeople in north india,the movement will be very tough in north india.Congress has to submit that during their rule they have been ruined the hindus all over in india.
They may come for a while but the term will be short.Similarly the mentality of Majority hindus are already attracted towards BJP becuase of congreess behaviour towards Hindus.
In Karnataka the major pulses that I came to understand is most of the people I met Be they from other states or natives .All of them are very much eager to welcome the BJP coalition govt in the state.