"Never disrespect people in a democracy. Arrogance and political vendetta have been defeated today. People have the final word in a democracy. What an audacity ? There is a (Bengali) proverb that unchecked rise of anything leads to its downfall," Banerjee said.
"In politics there should not be political vengeance and character assassination and insulting the people", the Trinamool Congress supremo said.
Banerjee is strongly critical of various policies of the Modi government and had earlier accused the BJP of political vendetta against her party over the CBI probe into Saradha scam.
Hailing AAP's victory, Banerjee who is speaking at a state government function on welfare projects said, "This is a victory for formation of government of the people, by the people and for the people. Loser is always a loser and winner is a winner."
Earlier in the day she had tweeted that the Delhi Assembly polls were a "turning point" in the present political situation which showed that political vendetta had no place in democracy.
Party Spokesman Derek O'Brien said besides congratulating AAP for its landslide victory in Delhi polls on Twitter, she has sent a SMS to Kejriwal congratulating him.