While Modi's campaign spending had reached an "obscene level" the Congress's expenditure had been mere "peanuts" in comparison, claimed Ramesh, a key strategist of the party.
Ramesh also demanded a "serious expenditure audit" of the money spent by parties in the just-concluded polls.
"This has been a difficult campaign because the Congress has been out-funded by BJP," Ramesh said here.
Congress leaders like Kapil Sibal and Anand Sharma have alleged that BJP spent between Rs 5,000 crore to Rs 10,000 crore on its high-decibel campaign, which was unprecedented in the history of Indian elections.
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In an interaction with mediapersons at the Indian Women's Press Corps here, Ramesh also came out with a proposal to check overspending during poll campaigning and suggested abolition of the MP-LAD scheme and using the money to state- fund elections.
Referring to the BJP's publicity drive in the print media, Ramesh said that "front page ads in newspapers" given by Modi "will tell you the story -- the amount of money that has been spent".
"Taking a frontpage ad in newspapers is not cheap. Congress didn't take out even one full frontpage ad," he said.