DMK does that all the time. DMK was with the BJP, now with the Congress. Because they want money, ministerships, more money from contracts and bribe. This is Indian politics. SP and BSP are doing the same, always changing sides, which is allowed. This is also true about smaller parties, like NCP, Assam Gana Parishad, etc etc. Indian politics is now very dirty. So the players are also very dirty, all criminals, thieves, bribe takers.
