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COLUMBIA, S.C. (Gambling911.com) - The South Carolina Senate race continues to tighten.
Over the last 24 hours, Republican candidate and sister of the late Senator Lindsey Graham, Darline Graham, odds to win this senate race were slashed from -400 to -300. Democratic U.S. Senate candidate Dr. Annie Andrews now pays out $24 for every $10 bet or $240 for every $100 bet.
Republican Sen. Tim Scott has said that South Carolina was not among the 10 toss-up states his National Republican Senatorial Committee was concentrating on. That may have changed on Wednesday.
For the first time, both candidates were in a dead heat.
As of October 28, 2026, just six days before Election Day, this is shaping up as one of the more surprising Senate contests in the country.
Latest South Carolina Senate polls
Pollster Graham (R) Andrews (D) Margin
NY Times/Siena, Oct. 26 48% 48% Tied
SC Policy Council, Oct. 25 47% 46% Graham +1
The Citadel, Oct. 25 43% 39% Graham +4
Impact Research, Oct. 21 44% 45% Andrews +1
Trafalgar, Oct. 18 49% 46% Graham +3
Rasmussen, Oct. 8 49% 45% Graham +4
And there are more signs the GOP is scared of losing in what has long been a reliably red state. On October 6, 2026, Republicans announced plans to direct $5 million into South Carolina's U.S. Senate race, an unusual investment in a state that has traditionally been reliably Republican.
The money comes from the Senate Leadership Fund (SLF), a major Republican-aligned super PAC, rather than directly from the Republican National Committee.
And this week, former South Carolina governors David Beasley (a Republican) and Jim Hodges (a Democrat) issued a joint bipartisan endorsement for Andrews.
Odds as of October 20
| State | Candidate | Odds | Probability |
| Alabama | Barry Moore (R) | -5000 | 98% |
| Everett Weiss (D) | +1600 | 2% | |
| Moore Margin of Victory | O/U 19.5% | ||
| Alaska | Dan Sullivan (R) | +250 | 24% |
| Mary Peltola (D) | -325 | 76% | |
| Arkansas | Tom Cotton (R) | -2500 | 96% |
| Hallie Schoffner (D) | +1200 | 4% | |
| Cotton Margin of Victory | O/U 15.5% | ||
| Colorado | Mark Baisley (R) | +2000 | 1% |
| John Hickenlooper (D) | -10000 | 99% | |
| Hickenlooper Margin of Victory | O/U 22.5% | ||
| Delaware | Michael Katz (R) | +4000 | 1% |
| Chris Coons (D) | -20000 | 99% | |
| Coons Margin of Victory | O/U 28.5% | ||
| Florida (Special) | Ashley Moody (R) | -1600 | 94% |
| Angie Nixon (D) | +800 | 6% | |
| Moody Margin of Victory | O/U 7.5% | ||
| Georgia | Mike Collins (R) | +1600 | 2% |
| Jon Ossoff (D) | -5000 | 98% | |
| Ossoff Margin of Victory | O/U 9.5% | ||
| Idaho | Jim Risch (R) | -1800 | 95% |
| Todd Achilles (I) | +900 | 4% | |
| David Roth (D) | +10000 | 1% | |
| Risch Margin of Victory | O/U 18.5% | ||
| Illinois | Don Tracy (R) | +4000 | 1% |
| Juliana Stratton (D) | -20000 | 99% | |
| Stratton Margin of Victory | O/U 22.5% | ||
| Iowa | Ashley Hinson (R) | -140 | 58% |
| Josh Turek (D) | +110 | 42% | |
| Kansas | Roger Marshall (R) | -180 | 64% |
| Adam Hamilton (D) | +150 | 36% | |
| Kentucky | Andy Barr (R) | -4000 | 98% |
| Charles Booker (D) | +1500 | 2% | |
| Barr Margin of Victory | O/U 20.5% | ||
| Louisiana | Julia Letlow (R) | -4000 | 98% |
| Jamie Davis (D) | +1500 | 2% | |
| Maine | Susan Collins (R) | +145 | 36% |
| Troy Jackson (D) | -175 | 64% | |
| Massachusetts | John Deaton (R) | +2000 | 1% |
| Ed Markey (D) | -10000 | 99% | |
| Markey Margin of Victory | O/U 32.5% | ||
| Michigan | Mike Rogers (R) | +215 | 27% |
| Abdul El-Sayed (M) | -275 | 73% | |
| Minnesota | Michele Tafoya (R) | +700 | 7% |
| Peggy Flanagan (D) | -1400 | 93% | |
| Flanagan Margin of Victory | O/U 6.5% | ||
| Mississippi | Cindy Hyde-Smith (R) | -1000 | 91% |
| Scott Colom (D) | +600 | 9% | |
| Hyde-Smith Margin of Victory | O/U 7.5% | ||
| Montana | Kurt Alme (R) | -2000 | 95% |
| Seth Bodnar (I) | +1000 | 4% | |
| Alani Bankhead (D) | +5000 | 1% | |
| Nebraska | Pete Ricketts (R) | -300 | 75% |
| Dan Osborn (I) | +240 | 25% | |
| New Hampshire | John Sununu (R) | +700 | 7% |
| Chris Pappas (D) | -1400 | 93% | |
| Pappas Margin of Victory | O/U 8.5% | ||
| New Jersey | Justin Murphy (R) | +1800 | 1% |
| Cory Booker (D) | -7500 | 99% | |
| Booker Margin of Victory | O/U 24.5% | ||
| New Mexico | Larry Marker (R) | +2000 | 1% |
| Ben Ray Lujan (D) | -10000 | 99% | |
| Lujan Margin of Victory | O/U 20.5% | ||
| North Carolina | Michael Whatley (R) | +2000 | 1% |
| Roy Cooper (D) | -10000 | 99% | |
| Ohio (Special) | Jon Husted (R) | +185 | 31% |
| Sherrod Brown (D) | -225 | 69% | |
| Oklahoma | Kevin Hern (R) | -5000 | 98% |
| N'kiyla Jasmine Thomas (D) | +1600 | 2% | |
| Hern Margin of Victory | O/U 23.5% | ||
| Oregon | David Brock Smith (R) | +1600 | 2% |
| Jeff Merkley (D) | -5000 | 98% | |
| Merkley Margin of Victory | O/U 23.5% | ||
| Rhode Island | Raymond McKay (R) | +2000 | 1% |
| Jack Reed (D) | -10000 | 99% | |
| Reed Margin of Victory | O/U 30.5% | ||
| South Carolina | Darline Graham (R) | -600 | 86% |
| Annie Andrews (D) | +400 | 14% | |
| Graham Margin of Victory | O/U 4.5% | ||
| South Dakota | Mike Rounds (R) | -2000 | 95% |
| Brian Bengs (I) | +1000 | 5% | |
| Rounds Margin of Victory | O/U 10.5% | ||
| Tennessee | Bill Hagerty (R) | -10000 | 99% |
| Marquita Bradshaw (D) | +2000 | 1% | |
| Hagerty Margin of Victory | O/U 21.5% | ||
| Texas | Ken Paxton (R) | +155 | 35% |
| James Talarico (D) | -185 | 65% | |
| Virginia | Bert Mizusawa (R) | +2000 | 1% |
| Mark Warner (D) | -10000 | 99% | |
| Warner Margin of Victory | O/U 21.5% | ||
| West Virginia | Shelley Moore Capito (R) | -10000 | 99% |
| Rachel Fetty Anderson (D) | +2000 | 1% | |
| Capito Margin of Victory | O/U 32.5% | ||
| Wyoming | Harriet Hageman (R) | -10000 | 99% |
| James W. Byrd (D) | +2000 | 1% | |
| Hageman Margin of Victory | O/U 33.5% |
- T C Jackson, Gambling911.com
