Dem
48
GOP
52
Control of the senate will probably come down to five states: Florida, Montana, Nebraska, Ohio, and Texas. The Democrats need to win at least two of them.
| State | Democrat | D % | Republican | R % | Start | End | Pollster |
| Arizona | Ruben Gallego | 50% | Kari Lake | 42% | Oct 21 | Oct 30 | Morning Consult |
| Arizona | Ruben Gallego | 50% | Kari Lake | 45% | Oct 25 | Nov 02 | Siena Coll. |
| Florida | Debbie Mucarsel-Powell | 45% | Rick Scott* | 48% | Oct 23 | Nov 01 | Morning Consult |
| Massachusetts | Elizabeth Warren* | 60% | John Deaton | 37% | Oct 29 | Nov 02 | U. of New Hampshire |
| Maryland | Angela Alsobrooks | 49% | Larry Hogan | 42% | Oct 22 | Oct 31 | Morning Consult |
| Maine | Angus King* | 50% | Demi Kouzounas | 35% | Oct 29 | Nov 02 | U. of New Hampshire |
| Michigan | Elissa Slotkin | 48% | Mike Rogers | 46% | Oct 29 | Nov 02 | Siena Coll. |
| Michigan | Elissa Slotkin | 49% | Mike Rogers | 41% | Oct 23 | Nov 01 | Morning Consult |
| Nevada | Jacky Rosen* | 52% | Sam Brown | 43% | Oct 24 | Nov 02 | Siena Coll. |
| Ohio | Sherrod Brown* | 46% | Bernie Moreno | 47% | Oct 23 | Nov 01 | Morning Consult |
| Pennsylvania | Bob Casey* | 46% | David McCormick | 43% | Oct 22 | Oct 31 | Morning Consult |
| Pennsylvania | Bob Casey* | 49% | David McCormick | 46% | Oct 27 | Oct 30 | Muhlenberg Coll. |
| Pennsylvania | Bob Casey* | 50% | David McCormick | 45% | Oct 29 | Nov 02 | Siena Coll. |
| Rhode Island | Sheldon Whitehouse* | 54% | Patricia Morgan | 40% | Oct 29 | Nov 02 | U. of New Hampshire |
| Texas | Colin Allred | 44% | Ted Cruz* | 47% | Oct 22 | Oct 31 | Morning Consult |
| Vermont | Bernie Sanders* | 64% | Gerald Malloy | 27% | Oct 29 | Nov 02 | U. of New Hampshire |
| Wisconsin | Tammy Baldwin* | 49% | Eric Hovde | 47% | Oct 23 | Nov 01 | Morning Consult |
| Wisconsin | Tammy Baldwin* | 50% | Eric Hovde | 46% | Oct 25 | Nov 02 | Siena Coll. |