He also slammed former ally DMK by calling it "ungrateful" and dubbed its then minister T R Baalu as an "unmitigating disaster".
While anti-incumbency is something the Congress has to counter after being in power for ten years, Ramesh said, "We have not been successful in political communication. Political communication does not take place at the last minute. You have to engage in political communication over a period of time. I think the Congress has been hurt by that."
"I always believed that one of the foundations of politics is communication and communication from the very top...By the 'sherpas' alone. So, political communication is very, very important but unfortunately we were found lacking," Ramesh told PTI here.
"The BJP mounted an aggressive campaign thanks to CAG and hyperactive judiciary; civil society jumped on to the bandwagon and I think for a period we (Congress) did not show the type of aggression we should have shown," he said.
Also Read
As for the 2014 elections, Ramesh said he was "somewhat disappointed" with the attitude of the DMK (which did not have an alliance with the Congress in the just concluded polls in Tamil Nadu).
In UPA-I, when Baalu was Union Minister for Surface Transport, the National Highway Authority of India, which came under his Ministry, had five chairmen.
"And he (Baalu) was (also) Minister for Environment and Forests...Mr(A) Raja (the then Telecom Minister)...I know what they did," the senior Congress leader said.