> For the complete documentation index, see [llms.txt](https://polymarketguide.gitbook.io/polymarketguide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://polymarketguide.gitbook.io/polymarketguide/markets/structure/outcomes.md).

# Outcomes

Polymarket markets can be either **single-outcome** or **multi-outcome**. In both cases, each outcome is represented by a **yes/no contract**.

### Single-Outcome

A single-outcome market has only **one outcome** tied to the event. It resolves to **Yes** or **No**.

*Example*: *Will the US confirm that aliens exist in 2025?*

<figure><img src="/files/kCjHY4AyKA7ZVpx3pGQH" alt=""><figcaption></figcaption></figure>

### Multi-Outcome

A multi-outcome market has **several possible outcomes** for the same event, with each outcome represented by its own **contract**. Each **contract** has its own **order book** and trades separately.

*Example*: In the *Presidential Election Winner 2028* market, each candidate is a separate outcome.

<figure><img src="/files/D48i7zd2BL907k5PQEfa" alt=""><figcaption></figcaption></figure>

You can imagine multi-outcome markets as a **group of single-outcome questions** bundled together. For instance, the *Presidential Election Winner 2028* market can be broken down into:

* Will J.D. Vance be the 2028 presidential election winner?
* Will Gavin Newsom be the 2028 presidential election winner?
* Will Alexandria Ocasio-Cortez be the 2028 presidential election winner?

...and many other candidates.