General Discussion

It bugs me to no end. Especially when Democrats and liberal media repeat it.

They can't allow the adjective which can have double meaning. It implies the Democratic party is democratic, which sounds like a complement, or like we believe in democracy. Yes, that's why the name was chosen.
They also can't imagine that we can tell which meaning is meant by context, even though that worked just fine for 200 years. That is partly partly due to lack of education, besides the meanness.

Similarly Republican implies that they are republican. It's just harder to call them the Republic party, because a republic is a country. A Democrat/democrat is a valid word for a person, when used correctly. Besides, Democrats are more educated and less mean in that petty sort of way.