The electoral college is terrible. As you might imagine, I always get many questions about it in Japan. Just being American makes me the "expert", I guess, so everyone asks me. And the more I research on it to give better answers, the more I dislike it (which is already quite a lot).
But it is as it is, eh? The saving grace is that America is becoming more and more liberal. Worrying trend of 18-24 year old single men moving to the far right aside, most of America seems to be moving in the right direction. Maybe, just maybe, this will work its way into the system and we might see some real change within our lifetimes. Well... if the system isn't hijacked by a demagogue, anyway.
I see it as a blowout for Harris, but I also am expecting Trump and his cohorts to scream "fake election" and try to claim victory, regardless of the actual results. The question on my mind is has the other side prepared enough to deal with this. We shall see...
The trend that you mention will eventually turn big state like Texas blue. It is inevitable. When it does, it's game over for the Republican Party. They have to come up with a completely different leadership and ideas. That would be the new dawn.