The 2004 United States Senate election in Alaska took place on November 2, 2004, alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives, various state and local elections, and the presidential election of that year. Incumbent Republican U.S. Senator Lisa Murkowski of Anchorage, sought election to her first full term after being appointed by her father Frank Murkowski to serve out the rest of the latter's unexpired term when he resigned in December 2002 to become Governor of Alaska. Her main challenger was Democratic former governor Tony Knowles, her father's predecessor as governor. Murkowski won by a slight margin.