[yan]

I'd brand those as different companies with slightly different designs, built on the same platform to cater to the market. A politician is more likely to sign up to an awesome service for managing political campaigns, and an artist is much more likely to sign up for a service to handle her public image that setes out to help manage gallery showings (and not just "gatherings" or "political events").

[mmavnn]

Remember all of patio11's comments around SEO as well. People will search on the problem they want to solve:

"How can I manage my political campaign?" "How can I promote my music?"