| Election Name: | 2008 United States Senate election in Mississippi |
| Country: | Mississippi |
| Flag Image: | Flag of Mississippi (2001–2020).svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2002 United States Senate election in Mississippi |
| Previous Year: | 2002 |
| Next Election: | 2014 United States Senate election in Mississippi |
| Next Year: | 2014 |
| Election Date: | November 4, 2008 |
| Image1: | File:CochranThad(R-MS) (cropped)1.jpg |
| Nominee1: | Thad Cochran |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 766,111 |
| Percentage1: | 61.44% |
| Nominee2: | Erik Fleming |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 480,915 |
| Percentage2: | 38.56% |
| Map Size: | 250px |
| U.S. Senator | |
| Before Election: | Thad Cochran |
| Before Party: | Republican Party (United States) |
| After Election: | Thad Cochran |
| After Party: | Republican Party (United States) |
The 2008 United States Senate election in Mississippi was held on November 4, 2008. The seat was regularly scheduled for election, unlike the special election taking place on the same day. Incumbent Republican U.S. Senator Thad Cochran won re-election to a sixth term.
| Source | Ranking | As of | ||
|---|---|---|---|---|
| align=left | The Cook Political Report[1] | October 23, 2008 | ||
| align=left | CQ Politics[2] | October 31, 2008 | ||
| align=left | Rothenberg Political Report[3] | November 2, 2008 | ||
| align=left | Real Clear Politics[4] | November 4, 2008 |
| Poll Source | Dates administered | Erik Fleming (D) | Thad Cochran (R) | |||
|---|---|---|---|---|---|---|
| align=left | Rasmussen Reports[5] | June 26, 2008 | 32% | 59% | ||
| align=left | Rasmussen Reports[6] | May 27, 2008 | 35% | 58% |