"An alliance with Left parties is possible only after the elections," Singh was quoted as saying in an IANS report.
When asked if the Congress would form an alliance with the Left the PM said, "For four-and-a-half years, the Left parties were very happy with our government. It was only in the last phase that they left us on one single issue. I myself have high regard for the leaders of the Left parties."
The Prime Minister added that the alliance will depend on the post-election situation.
Gaps formed between the United Progressive Alliance (UPA) and the Communist Party (Marxist) over the Indo-US nuclear deal in 2008.