In unexpected twist, Iowa's Joni Ernst could save GOP's Senate dream

Democratic Senate incumbents have proven surprisingly resilient ahead of November's midterms. But even if vulnerable Democrats manage to hang onto their seats in other states, Iowa may be the Achilles' heel in the party's quest to keep the chamber blue.

http://www.csmonitor.com/USA/Elections/Senate/2014/0929/In-unexpected-twist-Iowa-s-Joni-Ernst-could-save-GOP-s-Senate-dream