WASHINGTON, Dec. 5 -- The Democratic Congressional Campaign Committee issued the following news release: Vulnerable freshman Rep. Zach Nunn is getting attention for consistently bending to his party's extreme leadership in his first term in Congress. According to Bleeding Heartland, Nunn has "generally aligned with the preferences of GOP caucus leaders." In fact, it's "rare for even one of the Iowans to vote differently from top Republicans in the chamber..." Take a look at how Nunn has put t  more