That is not the size of the electorate (except. I suppose, for elections for county officials).Why such variance in electorate size? That is a problem there. Such a range gives the 43 voters too much say compared to the 4,835,125.I looked at the map, and many of the counties look similar in size. So I extracted the numbers and looked at them. They are mostly around 1000 square miles each, but with a few outliers, to as low as 149 mi^2 to as high as 6193 mi^2. Their populations vary from 43 to 4,835,125.
Surely the aim should be for each electorate to be as numerically close as possible to N +/= %N where N is to be determined.
It would be (in effect) if the Texas GOP got its way...