Chidambaram hit out at both DMK and AIADMK, saying neither party could hope to play a part in forming a government at the Centre and that a vote for these two regional parties was actually "invalid".
The FM also came down on Chief Minister Jayalalithaa, saying she had realised of late that it was not possible for her to become Prime Minister. For this reason there was no talk anywhere in the past three days on the issue.
"The present election is no rehersal election, but to the Lok Sabha. You should choose the right party," he said.
He also listed various schemes he had implemented in his sivaganga constituency
