Nineteen of the European Union's 25 member states were voting in the biggest transnational elections ever held, and the first for the EU since the bloc's expansion into the former communist eastern Europe on May 1.
Most of these nations are experienced in voting.
( z1 experience :ARG0 ( z2 nation :ARG1-of ( z3 include :ARG2 ( z4 nation :mod ( z5 this ) ) :ARG3 ( z6 most ) ) ) :ARG1 ( z7 vote :ARG0 z2 ) )