NationBuilder interacts with Twitter in several ways. The first and most important takes place when you connect your Twitter account to a Broadcaster.  

Broadcasters are the voices of your nation and are completely separate from people in your NationBuilder database. When you connect a Twitter account to one of your broadcasters by going to Messages > [broadcaster name] > Settings> Twitter, all of the followers of that Twitter account become supporters of your nation, and are entered into your database.

From your broadcaster dashboard you will be able to compose and send tweets. This is useful when you have a Twitter account for your organization and multiple staffers are going to be using it. Once your Twitter is connected to your broadcaster, all retweets and mentions of that account will appear in the executive dashboard. 

Another way NationBuilder interacts with Twitter is by letting your users sign in with their Twitter accounts. This is helpful because NationBuilder will pull their public information and profile picture from that account for that particular person's control panel profile.