WASHINGTON -- Looking back on the wreckage of 10 years of lost elections, Democrats in Congress know it's broke. The question is how to fix it. As they look to next year's House races, various Democratic factions -- the moderate Blue Dogs, the Congressional Black Caucus, the Progressive Caucus, the Congressional Hispanic Caucus and the Congressional Asian Pacific-American Caucus -- are joining to tackle such issues as President Bush's tax cut and changing priorities in the federal budget. "We're much more unified than we were in the past," said Rep. Robert Matsui (D-Calif.), chairman of the Democratic Congressional Campaign Committee,...