State Governors Republican 27-23
State Senates Republican 32-18
State Houses Republican 30-19-1
If you have a Democratic majority in a state, you can get new district lines drawn to favor Democrats. And to get a Democratic majority elected in a state
So if pigs can fly ...
While this may appear to be simple to turn around, I suspect the real problem is deep seated and requires at least 3 generations of education to eliminate ignorance and it's corollary bigotry. Take your statement and replace "Democrat" with "Republican". This will not be easy nor simple.