When these legislatures failed to do anything and some like Georgia were actually in on the steal, I have no confidence that their loyalty is not with us or President Trump. They could have acted and chose not to do so. I see them waiving their middle finger to the states that took them to SCOTUS and reconfirming what their state already chose.
Maybe someone else will help you and me out with this. I have the same concern about the state legislatures and I have no answer for that question.
Never underestimate the cowardice, venality, and self-interest of Republican politicians.
This issue of election fraud has the very real potential to be dragged out in the courts (SCOTUS) until after the date that the state elector votes need to be sent to the feds.
The goal here, assuming the affected Republican controlled states legislatures do NOT do the right/lawful thing...is to prevent either candidate from getting to 270.
Then, it goes to congress where in the House of Reps, each state will get 1 vote based on representation. Assuming all go along party line...Trump is seated for a 2nd consecutive term this January.