NationBuilder pulls people's information from a lot of different places, and while we try very hard limit the number of duplicates that will appear in your database it will occur from time to time. Sometimes the information people provide in a sign-up form doesn't exactly match up with their Facebook account, or they login to your website with twitter for the first time and then someone on your staff manually enters their data from an event sign-in, it happens. Luckily NationBuilder makes it easy to merge duplicates. 

If you spot a duplicate, the first thing you want to do is decide which control panel profile is the one you want to be merged into the other. One way to decide is to see which one has less information on it. Another way to decide is which profile has existed in your database for longer. NationBuilder will not delete any information from either profile but it is still helpful to have one be the "master" profile.

 Once you've decided on a "master" profile for this person, go into that profile and look at the persons NationBuilder ID number at the very end of the url. Example:

 http://abeforprez.nationbuilder.com/admin/signups/12746

Copy that number, and then go to the person's "lesser" profile (aka the duplicate). Go to the Edit tab and at the bottom of the page you will see the "Is this a duplicate?" field. Paste the NationBuilder ID of the "master" profile into this field and click Save Person. It may take a few moments, but NationBuilder will merge the two and keep all of the data.