Dems, the fact that their base demographic of single women, is so obnoxious and unattractive, that not replacing these generations of obnoxious female Dems with new generations is an almost certainty. As you can see, American men are less and less interested in spending time with them. This is why stemming immigration is an "existential threat" to them. If they can't admit millions of immigrants, they have bupkis.