The distinguishing feature of plurality-majority systems is that they almost always use single-member districts. In a First Past the Post system, sometimes known as a plurality single-member district system, the winner is the candidate with the most votes, but not necessarily an absolute majority of the votes (see First Past the Post (FPTP)). When this system is used in multi-member districts it becomes the Block Vote (see Block Vote). Voters have as many votes as there are seats to be filled, and the highest-polling candidates fill the positions, regardless of the percentage of the vote they actually achieve. Majoritarian systems, such as the Australian Alternative Vote (see Alternative Vote) and the French Two-Round System (see Two-Round System), try to ensure that the winning candidate receives an absolute majority (i.e. over fifty percent). Each system, in essence, makes use of voters' second preferences to produce a majority winner, if one does not emerge from the first round of voting.