# Can I launch a brand lift if my campaign is over?

Yes, it’s possible to launch a Brand Lift even if your campaign is already over. However, there are a few guidelines to follow.

Ideally, you should launch your Brand Lift once your campaign reaches around 70% completion. But sometimes, you might receive a late request to run a Brand Lift. In that case, we can still proceed, but keep in mind that:

* We recommend not launching a Brand Lift **if the campaign ended more than one month ago**. Beyond that, ad recall tends to be too diluted to generate meaningful insights.
* As always, you need to have reached **100,000 unique impressions** to run the Brand Lift.
* It will take **longer to collect responses** and to obtain a full report.

And that’s it!\
:wave: If you don't find your answer, feel free to reach out to <support@happydemics.com> for further consideration !

### 🚀 Related articles <a href="#related-articles" id="related-articles"></a>

* [Who are our respondents?](/methodology/happydemics-respondents/who-are-our-respondents.md)
* &#x20;[The set-up](/launch/the-set-up.md)
* [What do I need to launch a Brand lift?](/launch/before-the-set-up/what-do-i-need-to-launch-a-brand-lift.md)<br>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://support.happydemics.com/launch/before-the-set-up/can-i-launch-a-brand-lift-if-my-campaign-is-over.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
