Except mathematically, you can only gerrymander a given area so much before you start giving your opponent an advantage in other areas & they hit that limit around 2019. Voter suppression isn't really working for them lately either, going by the last few elections, and the anger regarding this is actually driving more people to the polls.
Floridian in a blood red county here. My kids & most of their friends are furious at the GOP & can't wait to vote.