The 2008 United States Senate election in Colorado was held November 4, 2008 when Republican Senator Wayne Allard from Colorado's 4th district decided not to seek a third term.
Incumbent Republican U.S. Senator Wayne Allard decided to retire instead of seeking a third term. The 2008 United States Senate election in Colorado was held November 4, 2008. Member of the U.S. House of Representatives
from Colorado's 4th district 
