Reelection (noun)

1. The act of electing someone again to the same office or position.
2. The state of being elected again to the same office or position.

Origin:

From re- + election.

Examples:

1. He campaigned for re-election as mayor.
2. The president's re-election campaign was successful.
3. The re-election of the president was controversial.
4. The re-election of the board members was expected.
5. The re-election of the senator was a surprise.