The 2006 United States Senate election in Wyoming was held November 7, 2006. The primaries were on August 22, 2006, in which both incumbent Republican Craig Thomas and his Democratic challenger were unopposed. Thomas won re-election to a third term, but died of leukemia on June 4, 2007; fellow Republican John Barrasso was subsequently appointed and has held the seat since.

Democratic primary

Candidates

Results

Republican primary

Candidates

Results

General election

Candidates

Campaign

Thomas was a very popular two term incumbent, having a 68% approval rating. Despite doing very well in the polls, Thomas agreed to a debate. An October debate was sponsored by the Casper Star-Tribune and KCWY in Casper. Thomas said the nation has made progress in its energy policy, while Groutage said the nation's energy policy has failed because Congress has done more for special interests than the people.

Debates

Predictions

Polling

Results

Thomas won at least 56% of the vote in every county in Wyoming.