Can I duplicate a campaign?

Yes, you can duplicate a campaign even if it is running, draft or archived. 

All you have to do is go to the Campaigns tab, click on the campaign you want to duplicate. If it is a running campaign, you have to pause it first.

On the Campaign Details screen, click on the Edit button.

On the new screen, there is a Duplicate Campaign button, click it. 

 

You will then be prompted to a new campaign you have duplicated. The campaign name will add a "Copy---2" at the end part of the original campaign name.