Further information: Wikipedia:Incumbent
The incumbent is the current holder of an office or position, usually in relation to an election. For example, in an election for president, the incumbent is the person holding or acting in the office of president before the election, whether seeking re-election or not. In some situations, there may not be an incumbent at time of an election for that office or position (for example, when a new electoral division is created), in which case the office or position is regarded as vacant or open. In the United States, an election without an incumbent is referred to as an open seat or open contest.