Complex sentence: The Arizona 8th congressional district election, 2006 was an election for the United States House of Representatives for the open seat of incumbent Jim Kolbe (R), who was not running for re-election.
Split into simpler sentences: The Arizona 8th congressional district election, 2006 is an election for the United States House of Representatives. It is an open seat as incumbent Jim Kolbe (R) is not running for re-election.