premise: The 2008 United States Senate election in Arkansas was held on November 4, 2008. Incumbent Democratic U.S. Senator Mark Pryor decided to run for a second term. No Republican filed to challenge him. His only opponent was Green Party candidate Rebekah Kennedy. He won re-election with 80% of the vote.
hypothesis: The 2008 United States Senate election in Arkansas was held in an odd numbered year.
reason: It was 2008, which is an even year. 