Biden winning is realistic, Trump winning is realistic, Biden getting Texas is realistic too, at least it is close enough in all polls to be called that, we will see the real one, but I am 100% sure it won't be too big of a difference, it is certainly more plausible than Trump getting California or New York, there is no way he could get that, it would be delusional to think trump or basically any republican aside from maybe Arnold getting anything from California.
It means this election is still a toss up because they both have their own places, guaranteed democrat or republic states, now we are all going to see the states where it is close to each other, those do get to make this decision and only those few number of states decides the faith of the nation.
What people are not really understanding is the fact that Trump wasn't doing that bad near the finish line. Of course he was an outside horse during the early days, hell his nomination for republican candidate was under 1% at one point, I understand that he started off as the person who nobody gave a chance, however by the end, when 2 weeks were done, there was just few points difference between trump and Hillary, it wasn't that big of a deal, it was always under the mistake level which is usually few points.
Right now when the polls are done so close to election the difference was never this big. The trouble with Trump is the fact that nobody really knew what would happen and if he could even win, so Hillary saw her chance as sure thing, Biden knows he has to win now that Trump showed he can win so he is taken seriously as an opponent.