This scenario isn’t just plausible: it’s probable. GOP-controlled states are already changing their state laws to allow for it, regardless of how their people vote

… While the main issue being debated in Moore v Harper, scheduled for a hearing (Ed.:by SCOTUS) this October, is a gerrymander that conflicts with North Carolina’s constitution, the issue at the core of the debate is what’s called the “Independent State Legislature Doctrine.”

It literally gives state legislatures the power to pre-rig or simply hand elections to the candidate of their choice….
That doctrine — the basis of John Eastman and Donald Trump’s effort to get states to submit multiple slates of electors — asserts that a plain reading of Article II and the 12th Amendment of the Constitution says that each state’s legislature has final say in which candidate gets their states’ Electoral College vote, governors and the will of the voters be damned.…

As we are watching, the Supreme Court — in collaboration with state legislatures through activists like Ginny Thomas — are setting that election up right now in front of us in real time.

Famed voting rights attorney Marc Elias has a possible (requires setting aside the filibuster) solution:

Link to tweet

We damn well better be planning for this, because it’s likely coming our way in just a bit more than two short years.