Parliamentary Debate is defined by the American Parliamentary Debate Association (APDA) as:

A formal contest of reason, wit and rhetorical skill which simulates debate in a theoretical House of Parliament. Two teams, the Government and the Opposition, of two debaters each, consider a resolution proposed to the House. A different resolution is proposed each round. The debate is moderated by a Speaker of the House, who will also serve as judge for the round. In parliamentary debate, emphasis is placed on quick thinking, logical argumentation and analysis, an command of rhetoric over extensive research or collection of evidence. Accordingly, no recorded evidence or other outside written material may be consulted during the round.