From Politico: 

The lead Senate Wall Street reform negotiator acknowledged Tuesday that Democrats are facing a nail-biting vote in the Senate, forcing congressional leaders to lean on Republicans to pass a bill unlikely to gain the support of two Democrats who have been holdouts for weeks. 

No one is predicting the bill will falter at this late hour, but the situation is forcing Sen. Chris Dodd (D-Conn.) and Rep. Barney Frank (D-Mass.) to moderate the measure in a way that very likely will disappoint liberals. 

“It is a Rubik’s Cube, to put it mildly,” Dodd told POLITICO.