Here is the forecast. BJP - 145 seats. May become a landslide of 170 seats depending on how many votes BSP, Samajwadi Party, Muslim league take away from Congress. Starts with an advantage of atleast 70 safe seats. BJP has never lost around 40 of these seats in last 4 elections mainly in Udupi, Mangalore, Karwar region and places like Hubli, Mysore, Bangalore, Davanagere.
Congress:- 35 seats. None of leaders are safe. Siddaramaih will face a strong BJP candidate. May just scrape thru. Dharam Singh will have a fight of his life for survival against BJP in Gulbarga District. Mallikarjun Kharge seat dereserved. Looking for a safe seat somewhere. S.M.Krishna - Probably may contest in Bangalore and lose to BJP or contest in rural Mandya and have a fighting chance in a traingular fight with JD(S) and BJP.
JD(S) :- Best scenario 20 seats. Worst scenario. Complete wipeout.
Others:- Bangarappa's party may win few seats. But he will have a fight of his life against BJP's Ayanuru Manjunath who had defeated him in Lok Sabha election in 1998 and nearly in 2006.
BSP:- May win seats in single digits. But cause enough grief to congress that they may regret turning against Mayavathi.
