Democrats on Capitol Hill say that historic and controversial climate change legislation is likely to pass the House of Representatives tomorrow. A top Democratic aide estimated that Speaker Nancy Pelosi had banked just enough votes as of this evening. Included are a handful of Republicans. Other Democrats said that they weren't sure where the vote count stood, but that they expected the bill to pass. (Republicans say they're confident it will fail.) Late today, the AFL-CIO endorsed the bill, which might boost its fortunes among Democrats in Pennsylvania. And on the other side, the Chamber of Commerce said it would count the vote as "key," which means they'll hold a "yes" vote against lawmakers.