That looks like a gift to the Republicans in the western half, at least--it cracks the 5th district's Republicans links Des Moines to conservative areas. I'll bet this makes Boswell even more vulnerable. I don't know if that district overlaps at all with the one he represented in the 1990s.
I like the map a lot. I would approve it in a heartbeat. Each party loses a seat in exchange for a marginal one with a GOP lean, probably one destined to grow over time. That seat will elect a Pubbie or house broken Dem. Perfect! Oh, and that nutter King may be in trouble. Even better! 
Why is King a "nutter" but not 0 ACU score and 100 ACLU score, 100 AFL-CIO score, etc. uber-liberal David Loebsack?
King is a nutter because of the absolutely bats*** crazy things that comes out of his mouth. Torie calling King a male version of Michelle Bachmann was right on point.
This is getting far afield from the purpose of this subforum, but I think I've got it. "Nutter" means outspoken social conservative. Name a "progressive" nutter. There are plenty of "progressive" politicians who say stupid, extremist things.
