Party affiliation is self-determined.

Anyone who wants to be a Democrat can be a Democrat. There isn't a separate thing called a "Real" Democrat.

Democrats are nearly as varied as humans are. Some day, we'll figure that out.

We need all of them, not just the ones who agree with us on every issue, and we need Democrats who appeal to their potential constituents, not to some generalized concept of what we think every Democrat should be.