High Quality Content by WIKIPEDIA articles! The Missouri gubernatorial election, 2008 was an election for the Governor of Missouri, held on November 4, 2008. The current governor, Matt Blunt, who had decided to retire, narrowly won the 2004 election by beating state auditor Claire McCaskill 51%-48%, and would likely have faced a strong challenger in 2008. McCaskill is now a U.S. senator.