The DCCC Frontline program is basically all about protecting vulnerable incumbents.  Perennial member Leonard Boswell is back on this year, and is the only Rep. from Iowa listed.  Notably missing from the list are Carol Shea-Porter from New Hampshire and Nancy Boyda from Kansas.  Here’s the whole thing:

Representative Jason Altmire (PA-04)

Representative Michael Arcuri (NY-24)

Representative John Barrow (GA-12)

Representative Melissa Bean (IL-08)

Representative Leonard Boswell (IA-03)

Representative Christopher Carney (PA-10)

Representative Joe Courtney (CT-02)

Representative Joe Donnelly (IN-02)

Representative Chet Edwards (TX-17)

Representative Brad Ellsworth (IN-08)

Representative Gabrielle Giffords (AZ-08)

Representative Kirsten Gillibrand (NY-20)

Representative John Hall (NY-19)

Representative Baron Hill (IN-09)

Representative Paul Hodes (NH-02)

Representative Steve Kagen (WI-08)

Representative Ron Klein (FL-22)

Representative Nick Lampson (TX-22)

Representative Tim Mahoney (FL-16)

Representative Jim Marshall (GA-08)

Representative Jerry McNerney (CA-11)

Representative Harry Mitchell (AZ-05)

Representative Christopher Murphy (CT-05)

Representative Patrick Murphy (PA-08)

Representative Ciro Rodriguez (TX-23)

Representative Heath Shuler (NC-11)

Representative Zack Space (OH-18)

Representative Tim Walz (MN-01)

Representative John Yarmuth (KY-03)