The simmering warfare between Karunanidhi's two sons, MK Stalin and MK Alagiri, seems to have reached a point of no-return with the disbanding of the Madurai unit of the DMK, which was controlled by Alagiri. This could eventually lead to a split in the DMK and change the political complexion of the state. The fallout will be felt in the coming Lok Sabha elections as well.br br Tamil Nadu politics is undergoing a churn with the DMK planning to hook up with Captain Vijayakant's DMDK after having dumped the Congress, though the Congress is still hoping that Karunanidhi will have a change of heart and take it along in the battle against Jayalalithaa who now looks invincible.