How to Write a Debate Case

What a debate case is

A debate case is the argument your side will defend for the whole round, organised so a judge can follow it on first hearing. It is not an essay. An essay can explore; a case has to survive an opponent whose job is to find the weakest sentence in it. That is why good cases are built from small, testable parts: a clear position, a reason the judge should decide the round your way, and two to four contentions that each prove something specific.

The process below works for every format. The format changes the length, the number of contentions and who gives which part, which the format section covers further down.

Eight steps from motion to finished case

1. Read the motion word by word. Note the actor (who does it), the action (what changes) and any word that sets the strength of the claim, such as should, would, ban, regulate or prioritise. A motion about regulating something is a different debate from one about banning it.
2. Define the key terms in plain language. Pick definitions that are fair and that a judge would accept without argument. A squirrelled definition wins the definition debate and loses the round.
3. Write your burden in one sentence: what does your side have to prove for the judge to vote for you? If you are proposing a policy, you usually need to show a problem, a mechanism and a net benefit. If you are opposing, you choose whether to defend the status quo, a counter-proposal or simply that the proposal does more harm than good.
4. Brainstorm widely, then cut hard. List every argument for your side, group the ones that share a reason, and keep the two to four groups that are strongest and most different from each other.
5. Build each contention as a chain: claim (what is true), warrant (why it is true), evidence (what supports the warrant), impact (why it matters) and weighing (why it matters more than what the other side will say).
6. Write the framework: the standard the judge should use to decide. In Lincoln-Douglas it is a value and criterion; in most other formats it is a sentence on what the round should be about, such as who bears the cost or which outcome is more likely.
7. Pre-empt the most obvious response to each contention inside the contention itself. One sentence is enough. It stops the opponent's best attack from looking new.
8. Write it out, read it aloud against a timer, and cut until it fits with fifteen seconds to spare.

Worked example: a full case outline

Notice what the outline does not contain: a long introduction, rhetorical questions or a list of statistics without warrants. Every line either defines the debate, proves something or tells the judge how to compare.

How case structure changes by format

Public Forum (PF)

A four-minute constructive usually fits two contentions, each with evidence, and sometimes a short framework. Because you often do not know your side until shortly before the round, write a case for each side and keep them consistent in style. Put pre-emption into the second constructive if you speak second.

Lincoln-Douglas (LD)

The case is built around a value and a criterion, followed by contentions that each show how your side meets the criterion. A weak link between contention and criterion is the first thing a good negative will attack, so state it explicitly at the end of every contention.

British Parliamentary (BP)

Opening Government sets the definition and, for policy motions, a model: what exactly happens, who does it and how it is enforced. Opening Opposition responds to that model. Closing teams do not write a full case of their own; they prepare an extension, a new line of analysis the opening half did not cover.

World Schools (WSDC)

The case is split between the first and second speakers under a single team line. The first speaker gives definitions, the burden and usually the first argument; the second speaker gives the remaining arguments. Write the split before you write the arguments, so neither speaker repeats the other.

Checklist before you call the case finished

• Can you state the whole case in two sentences?
• Does every contention have a warrant you could explain without your notes?
• Is every piece of evidence one you have read in the original, with a full citation?
• Does each contention say why it matters more than what the other side will argue?
• Have you written down the strongest response to each contention, and your answer to it?
• Does it fit in the time with room to slow down?

If any answer is no, fix that before you practise delivery. Polishing the speech of a case with a missing warrant only makes the gap harder to see.

Where DebateLab helps

Once you have a draft, attack it before an opponent does. Paste a contention into Attack to see which link breaks first, use Brainstorm when you need more angles at step four, and use Factoids to research a single statement you want to rely on. If you would rather start from a structure, the case generator produces a draft with a thesis, framework, contentions and a predicted opposing case, which you can then cut and rewrite with the steps above.