The union, one of four to take part in the joint strike in June, still has a valid ballot.

Union for Peru got the most votes, with 24.0% of the valid ballots.

The justices questioned the decision to change the counting rules, and also asked what constituted a valid ballot.

Voters are required to rank all candidate to cast a valid ballot.

In the convention, the winner needed a majority of the 3,447 valid ballots.

In fact, South Korea has been already elected as a member for 1996-1997 with over 2/3 of valid ballots.

Voters may be given false information about when and how to vote, leading them to fail to cast valid ballots.

These four parties account for only 75.76% of all valid ballots cast.

A majority is determined based on the number of valid ballots.

To cast a valid ballot, Australian voters must rank every candidate.