If a political party or candidate gets a majority of votes, it means that they get more than all the other parties together. In Plurality voting, they only get more than any one of the others. Thus if there are three parties, the winning party may have a plurality of 40% while the other two each have 30%. A "true majority" or "absolute majority" means more votes than all the other parties together, i.e. more than half the total votes.