What happens if Trump/Republicans keep winning while losing the PV?

[Nichlemn]

Let's say it's also happening at the Congressional level - Ds have also won the House PV but failed to win the House, and also the overall Senate PV, but failed to win the Senate. It happens in 2020. And then again in 2024.

Does anything happen other than Democrats making a noise and then everyone else forgetting about it? Or does it start a real push for electoral reform?

[Nichlemn]

Does anything significant happen if the Democrats win the House PV in 2018 by a *lot* (5+ points and over 50%), yet still fail to take the House?

Obviously, there'd be an initial burst of complaints that don't lead to anything. But does it produce significant effects on grassroots support for electoral reform?
 

[Nichlemn]

If it happened several times in a row, there is no doubt in my mind that the Dems would create several new states (requires only the majority consent of congress and of the relevant state legislature) when they finally got back in power after economic crash or an impeachment level scandal.  See also: Nebraska being admitted as a separate state from Kansas, Colorado being admitted while severely underpopulated and the splitting of the Dakotas.

I do wonder, are there any judicial limits that would prevent this being used indiscriminately? Like, could one party create 1,000 rotten borough "states" of 1 person each, who vote to guarantee one-party rule forever?

Obviously, it'd be seen widely as effectively a coup d'etat and protested against for the reason. But it there anything constitutionally prohibiting it?