| Election Name: | 2004 United States Senate election in Alaska |
| Country: | Alaska |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1998 United States Senate election in Alaska |
| Previous Year: | 1998 |
| Next Election: | 2010 United States Senate election in Alaska |
| Next Year: | 2010 |
| Election Date: | November 2, 2004 |
| Image1: | Lisa Murkowski.jpg |
| Nominee1: | Lisa Murkowski |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 149,773 |
| Percentage1: | 48.58% |
| Nominee2: | Tony Knowles |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 140,424 |
| Percentage2: | 45.55% |
| U.S. Senator | |
| Before Election: | Lisa Murkowski |
| Before Party: | Republican Party (United States) |
| After Election: | Lisa Murkowski |
| After Party: | Republican Party (United States) |
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. As of 2022, Lisa Murkowski’s vote total of 149,773 votes remains the most raw votes she has ever received during any of her runs for the US Senate.
Although Alaska is heavily Republican, popular opinion had swung against the Murkowski family because of a tax increase passed by Governor Frank Murkowski, Lisa Murkowski's father. In addition, many voters disapproved of apparent nepotism in the appointment of Lisa Murkowski to the Senate. Knowles, who as mentioned above preceded Frank Murkowski as governor, had enlisted extensive out-of-state support for his bid to take over Lisa Murkowski's Senate seat. However, veteran Republican Senator Ted Stevens taped advertisements warning Alaskans that electing a Democrat could result in fewer federal dollars for Alaska.
Lisa Murkowski had very low approval ratings as senator due to her father, Frank Murkowski, who at the time was the governor of Alaska with extremely low approval ratings himself. Former governor Tony Knowles ran against Murkowski. He ran as a Democrat who supported drilling in ANWR, in contrast to most Democrats. Alaska's senior senator, Ted Stevens, worked to rescue her campaign and help her maintain her seat.[1]
| Poll source[3] | Dates administered | Murkowski (R) | Knowles (D) | ||||
|---|---|---|---|---|---|---|---|
| KTUU | align= center | October 4, 2004 | align= center | 45% | align=center | 48% | |
| KTUU | align= center | October 18, 2004 | align= center | 45% | align=center | 47% | |
| McLaughlin | align= center | October 28, 2004 | align=center | 48% | align= center | 43% |