He pointed out that in the US, the result of exit polls are not declared before the elections are over. "This is the normal practice in democracies."The CPM will go for some guidelines on this issue in the new Parliament, Yechury said.

Not only the opinion and exit polls last year were widely off the mark in a few states and the overall correct results were reached by "fluke," there were also "financial irregularities." Doordarshan should have got Rs 15 lakh, but it received only Rs 1 lakh, the CPM leader said.

While the right to the freedom of expression has to be protected, the right to disseminate disinformation should bedenied, he said.

Expressing his scepticism over the exit poll results which have given a clear majority to the National Democratic Alliance in the elections held so far, Yechury said that the actual results will have some "big surprises."Quizzed on the shifting stand of the CPM on the Third Front, he said that there is no equivocation in his party's stand on the issue. As far as support to the Congress was concerned, it was only for the 12th Lok Sabha in which only the Congress had the numbers to form a secular government, he said.

In the 13th Lok Sabha, however, the CPM will make its efforts to stop the installation of the communal government, he said. Yechury said that the NDA-led government will be unstable, as the constituents are not united.