The 2006 United States Senate election in New Mexico took place on November 7, 2006. The primaries were held June 6, 2006. Incumbent Democrat Jeff Bingaman won re-election to a fifth term in a landslide. As of 2024 this was the last time a Democratic Senate candidate, as well as any candidate in New Mexico has won all 33 of New Mexico's counties.

Democratic primary

Candidates

Results

Republican primary

Candidates

Campaign

Pfeffer announced on August 23, 2005, that he would be entering the primary. A former Democrat, he supported George W. Bush in 2004 and became a Republican in 2005. In his campaign announcement, Pfeffer focused mainly on border controls with Mexico. He criticised Bingaman in comparison to his own support for reform of the Social Security system and the Iraq War as well as U.S. relations with China, saying "With all due respect, I do not believe the present occupier of the junior seat from New Mexico is doing all that can and should be done on these fronts," he said of Bingaman. "I believe I can do a better job..." Pfeffer also commented that he would have a hard time raising an amount equivalent to Senator Bingaman, a problem faced by any of the latter's potential challengers.

Results

General election

Candidates

Campaign

Bingaman had a 60% approval rating in one poll. He faced no primary opposition. There had been speculation that Bingaman would give up the chance to run for another term to pursue a lobbyists' job in Washington.

Debates

Predictions

Polling

Results

Counties that flipped from Republican to Democratic