nominee

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One who has been nominated to an office or for a candidacy.

from The Century Dictionary.

• noun One who is nominated, named, or designated, as to an office.
• noun In English common law, the person who is named to receive a copyhold estate on surrender of it to the lord; the cestui que use, sometimes called the surrenderee.
• noun A person on whose life an annuity depends.

from the GNU version of the Collaborative International Dictionary of English.

• noun A person named, or designated, by another, to any office, duty, or position; one nominated, or proposed, by others for office or for election to office. One remains a nominee until one has been elected or has assumed the office.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A person named, or designated, by another, to any office, duty, or position; one nominated, or proposed, by others for office or for election to office.
• noun A person or organisation in whose name a security is registered though true ownership is held by another party, called nominator, especially for the purpose of concealing the identity of the nominator.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a politician who is running for public office