Hmm. Interesting, is there any state the GOP could do this and have it be to their advantage?
Not easily. The States in which the GOP controls both the Legislature and the Governor's mansion at present are all solid Republican States presidentially. They could try to do it via the initiative process in California and other states that allow the initiative.
The Democrats could pull this off in Arkansas, Louisiana, and West Virgina, although only in Louisiana would this be guaranteed to help the Democrats gain EVs.