Tom Udall was elected to the U.S. House in 1998, unseating Republican Rep. Bill Redmond. Udall received 53 percent to Redmond's 43 percent.
Udall won the 2000 Democratic primary over Francesca Lobato with 83 percent of the vote. He defeated GOP state legislator Lisa Lutz with 67 percent of the vote in the 2000 general election.
Udall was unopposed in the 2002 Democratic primary and had no GOP opponent on the general election ballot. A GOP write-in failed to get enough votes in the primary to win a spot on the November ballot.
Udall again faced no primary opponent in 2004, but his general election challenger was Greg Tucker, a Republican district attorney from Farmington.
Udall was elected as New Mexico's attorney general in 1990 and re-elected in 1994. He made two previous but unsuccessful bids for Congress.
In 1988, Udall lost by 5,800 votes to Republican Steve Schiff in the 1st Congressional District. The Albuquerque-area congressional seat came open because Republican Manuel Lujan Jr. retired. Udall won a 10-way primary race for the Democratic nomination.
In 1982, Udall finished last in a four-way race for the Democratic nomination in the newly formed 3rd congressional District. Bill Richardson won that primary and went on to represent the district for 14 years.