Politico explains what the “dissident” Dems and Republican Senator Brown want:

In an unusually dramatic vote, a measure to cut off debate on the Wall Street bill failed 57-42. Democrats Maria Cantwell of Washington and Russ Feingold of Wisconsin voted no, and Democrat Arlen Specter of Pennsylvania was not in the chamber.

Cantwell said she wanted votes on two amendments and made clear she wouldn’t go along with Reid’s schedule without it. Feingold said the bill failed the test of preventing another financial crisis.

———————————–

Reid would need to work out some sort of agreement to allow consideration of amendments that Cantwell, Brown and others have deemed as necessary before they can support the bill. But Republicans have thwarted Democratic attempts to arrange votes on key amendments, resulting in the standoff that led to Wednesday’s defeat.