When will we next get large swaths of 100% D/R precincts federally? Is it even possible?

[Skill and Chance]

TBH the most likely scenario for this would involve state or federal courts turning a blind eye toward pretty obvious election rigging activities at the local level and/or allowing states/localities to adopt much stricter voting rules than are currently constitutional (e.g. if people had to own a certain amount of land to vote, many rural counties would likely be unanimous R).