You can't split counties in Iowa by law (unless necessary for population equality, but in Iowa it's not because of the plethora of tiny counties).
Didn’t know that. Would it be possible to make a map with R-leaning districts?
They’d probably combine Polk with Story for a D vote sink. Then the leftovers of IA-3 can become part of the new IA-4 and the eastern remnants of the old IA-4 can become part of IA-1.
Also, is it possible to put Linn, Johnson, and Scott in one district so shore up IA-1 for the GOP?