Republican-Lite Reps may torpedo Iraq War bill

Jesus Christ! read this:

(03-20) 04:00 PDT Washington -- Only two things are certain as Speaker Nancy Pelosi and her Democratic deputies prepare for this week's House vote on a war spending bill that seeks the withdrawal of U.S. forces from Iraq by Aug. 31, 2008.

The Democratic House leadership will need near-unanimity among its members to pass the bill. San Francisco's Pelosi and the deputies face a challenge winning support from a caucus that includes conservative Blue Dog Caucus members worried the bill may restrict the president more than they want(emphasis mine) and ardent anti-war Out of Iraq Caucus lawmakers who think the bill's restrictions don't go far or fast enough.
SFGate.com

Why don't these Blue Dogs just change parties? Or, better yet, a name change to Lap Dogs.