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.
You can be conservative/liberal and even an outspoken one without dreaming up all these weird and wacky extreme conspiracy theories, and without saying utterly crazy things. Loebsack is indeed quite liberal, but he does't go around making extreme statements. King basically came to the defense of the terrorist who flew a plane into the IRS building. He said terrorists would celebrate in the streets if Obama was elected. He is against gay marriage (fine most conservatives are), but he went into this bizarre end of civilization tangent He is certified straight jacket material.
FTW, I'm not convinced King would be in all that much trouble in IA-4 on the map, but if it happens to be a bad year for the GOP he could.
