ABC News -- ABC News Rick Klein reports: Could the health care bill be in real trouble in the House? The Democratic defections are starting to pile up in advance of a vote scheduled for tomorrow on sweeping health reform efforts. (That schedule could slip to Sunday or beyond, if the votes arent there.) According to the National Republican Congressional Committee -- which, of course, has an interest in watching this vote particularly closely -- 15 House Democrats and counting are saying publicly that theyll oppose the measure when it reaches a vote. Democrats can afford only 40 such defections to squeak the bill through. Theyd prefer to win with room to spare. The Democrats whove said -- either in interviews or press releases -- that theyre opposing...