These purges often just cover every name from an area likely to contain a majority of Democratic voters such as black people, students etc.
Indeed, they are most often targeted. And have been undertaken en mass in Republican-led states over the last year.
I have posted articles regarding a few other voter purge efforts, as well attempts to change election rules at the eleventh hour, that have also been challenged all the way to the SCOTUS, with most still awaiting a decision.
And that outcome is by design: most of these efforts were intended to be challenged, with the expressed intent of bubbling up all the way to the highest court that MAGA state leaders see as friendly and appeasing to far-right ideology. That is particularly the case with the absolutely batshite crazy Independent State Legislature Doctrine (ISLD), for which many of these election actions were written to establish through eventual SCOTUS rubber stamp.
And ISLD is one of the most dangerous ideas being paraded around the far-right political spheres right now, as it would, in it’s purest form, give full control to state legislatures to decide when it is “in the best interest of the electorate” to completely ignore the popular vote and declare a winner by “vote” of the legislature (which really means just selection by MAGA majority). That, if signed off on by SCOTUS, could even extend to electoral college delegations.
In essence, it would allow them to “legally” subvert federal elections taking place in their state.
And MAGA are desperate to have SCOTUS establish this as constitutional because they know they are going to increasingly struggle to win popular votes, for state, congressional, and presidential elections.
This is yet another effort in the slow march to a fascist state that many just simply want to ignore.