"Finally Money Power proves to be stronger than People's Power.
"People of Goa defeated BJP but those who got elected on anti BJP vote sold Goa to BJP. Sad," he tweeted.
The Congress failed to cobble up a majority despite winning 17 of the 40 seats in Goa, even as all opposition members other than Congress joined hands with BJP to form a government under Parrikar.
Singh is the general secretary incharge of Congress in Goa, who was negotiating with various parties and elected MLAs after the results came in on March 11.