In Obama's New Message, Some Foes See Old LiberalismBy Alec MacGillis Washington Post Staff Writer Wednesday, March 26, 2008; Page A01 **SNIP** Despite being rated the most liberal senator in 2007 by the National Journal, Obama has sought to confound easy categorization. **SNIP** His strategists recognize that Democratic voters and the superdelegates who may end up deciding the hotly contested nomination are concerned about the electability of a candidate tagged with the "liberal" label that has fatally wounded nominees such as John F. Kerry, Michael S. Dukakis and Walter F. Mondale. **SNIP** "The frustration that the Clinton campaign has felt...