OK, so the first big Iowa endorsement was Tom Vilsack's endorsement of Hillary. However, the first big Iowa endorsement since then came today with freshman Rep. Bruce Braley's (IA-1) endorsement of John Edwards.
The big game left on the range are Gov. Chet Culver and Lt. Gov. Patty Judge (neither are likely to endorse until after the caucuses, although Culver's wife Mariclare or father, Sen. John Culver could endorse), Sen. Tom Harkin (same deal with his wife Ruth), and Reps. Leonard Boswell (IA-3) and Dave Loebsack (IA-2).