[al452]

Not quite... the real point of gerrymandering is to concentrate your political opponents' support, so that they have a small number of large majorities, and to spread out your own, so that you have a large number of small majorities. This will presumably tend to make some areas more homogeneous and some less.

[mhuffman]

It's both! One's called "cracking" and the other is called "packing".