Oppo research refers to an investigation of the

Oppo research refers to the investigation of the political candidate’s information like the politicians medical history or problem, educational background, the politicians biography, financial records, or anything that involves the politician. The opposition research is used to discredit the politician in order for the voters to think negative against this person. The result of the Oppo research is sometimes used by the opposing party as a negative campaign against the politician or a black propaganda.