theprestige
Penultimate Amazing
...because it is so very broad. Both Noam Chomsky and John Kerry are labelled "liberals" in the US, and the difference in opinion between them is wider than the political spectrum in I think any western European country.
This just speaks to the paucity of political thought in western Europe. Founders forbid that America ever become so bankrupt of political ideas that their entire spectrum of debate is encompassed by a word which at present doesn't even cover half the range of American politics!