Certainly not. Most democracies have many political parties vying for, or actually having, representation in their parliaments. Two party systems are rare.
Just google search
All Mon Region Democracy Party was created on 2010-04-07.
One party systems are generally not democratic at all by definition, indeed they are the opposite to a democracy -- being Authoritarian states. Democracy is about choice; in one party states they have abolished the opposing parties meaning there is no choice and the one officially approved party rules the country as dictators.
democracy
not at all!
all of the above
democracy
the pully system :D
France has a pluralist democracy system. This is whereby there is competition for all who are interested in leadership.
direct democracy
Democracy ! (:
democracy