There are 3 gubernatorial seats up for re-election in 2007 (in italics) and 11 up in 2008.

• 2007
  
• Kentucky
• Louisiana
• Mississippi
• 2008
  
• Delaware
• Indiana
• Missouri
• Montana

• New Hampshire
• North Carolina
• North Dakota
• Utah
• Vermont
• Washington
• West Virginia

This Wikipedia page is a good resource...