An incumbent is an elected official who holds an office and is running for reelection.
The incumbent is the current office holder, the "challanger' is the person running against the incumbent
Barack Obama is the incumbent president.
A governor already in office.
The mayor who is in office and running for reelection.
An elected official who is running for another term in office.
The incumbent is the current holder of a political office. To vote "non-incumbent" would mean to vote for the challenger to the incumbent's position.
Re-Election
The phrase incumbent governor would be referring to the current governor. As of June 2014, Terry Branstad of Iowa is America's longest serving governor.
The possessive form for the singular noun incumbent is incumbent's.
The incumbent is the current office holder, the "challanger' is the person running against the incumbent
Barack Obama is the incumbent president.
Barack Obama is the incumbent democratic president.
The incumbent in an election is the current office-holder. For the 2012 Presidential race, the incumbent is Barack Obama.
an incumbent
The term "incumbent" refers to a person currently holding a specific position or office, often in a political context. It can also describe an obligation or duty that one has. In elections, an incumbent is typically the candidate already in office seeking re-election. The term emphasizes the existing status or responsibility associated with the position.
the incumbent (your mom) the incumbent (your mom)
In politics, the incumbent is the person who holds the seat he/she is running for in order to keep it. The challenger is the person trying to win the seat that the incumbent has.