Election 2006 Results
Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.
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2006 Senate election results by state and county
Democrats won 23 of the Senate seats up and gained six, taking control of the chamber as voters turned against George W. Bush and the Iraq War.
33 Senate races were held in 2006. Democrats won 22 and Republicans 9, and 2 went to neither party.
The closest were Virginia (D+0.4), Montana (D+0.9) and Missouri (D+2.3). 7 seats changed party: Connecticut to the third party, Montana to the Democrats, Ohio to the Democrats, Pennsylvania to the Democrats, Rhode Island to the Democrats, Vermont to the third party and Virginia to the Democrats.
Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.
About the 2006 Senate elections
By 2006 the Iraq War had become deeply unpopular, the response to Hurricane Katrina had damaged Bush, and a series of scandals had hit congressional Republicans. Democrats won 23 Senate races to the Republicans' 10 and took six seats without losing any, giving them a 51-49 majority with two independents, Bernie Sanders of Vermont and Joe Lieberman of Connecticut. Lieberman had lost the Democratic primary and won re-election as an independent. Control came down to two close races. In Virginia, Jim Webb beat George Allen by 0.4 points, and in Montana Jon Tester beat Conrad Burns by 0.9 points. Claire McCaskill unseated Jim Talent in Missouri by 2.3 points. Democrats also gained Ohio, where Sherrod Brown beat Mike DeWine; Pennsylvania, where Bob Casey Jr. beat Rick Santorum; and Rhode Island, where Sheldon Whitehouse beat Lincoln Chafee. Republicans held Tennessee, where Bob Corker beat Harold Ford Jr. by 2.7 points. Democrat Benjamin Cardin held Maryland against Michael Steele, and Amy Klobuchar won an open seat in Minnesota.
Every race
| State | Democrat | Votes | Republican | Votes | Others | Margin |
|---|---|---|---|---|---|---|
| Arizona | Jim Pederson | 664,141 (43.5%) | Jon Kyl | 814,398 (53.3%) | 48,243 | R+9.8 |
| California | Dianne Feinstein | 5,076,289 (59.4%) | Dick Mountjoy | 2,990,822 (35.0%) | 474,365 | D+24.4 |
| Connecticut flip | Ned Lamont | 450,844 (39.7%) | Alan Schlesinger | 109,198 (9.6%) | Joe Lieberman (Connecticut for Lieberman) 564,095 (49.7%) |
Ind. +10.0 |
| Delaware | Tom Carper | 170,567 (67.1%) | Jan C. Ting | 69,734 (27.4%) | 13,798 | D+39.7 |
| Florida | Bill Nelson | 2,890,548 (60.3%) | Katherine Harris | 1,826,127 (38.1%) | 76,859 | D+22.2 |
| Hawaii | Daniel K. Akaka | 210,330 (61.3%) | Cynthia Thielen | 126,097 (36.8%) | 6,415 | D+24.6 |
| Indiana | none | Richard Lugar | 1,171,553 (87.4%) | Steve Osborn (Libertarian) 168,820 (12.6%) |
R+87.4 | |
| Maine | Jean Hay Bright | 111,984 (20.6%) | Olympia Snowe | 402,598 (74.0%) | Bill Slavick (Independent) 29,220 (5.4%) |
R+53.4 |
| Maryland | Benjamin L. Cardin | 965,477 (54.2%) | Michael S. Steele | 787,182 (44.2%) | 28,480 | D+10.0 |
| Massachusetts | Ted Kennedy | 1,500,738 (69.3%) | Kenneth Chase | 661,532 (30.5%) | 3,220 | D+38.8 |
| Michigan | Debbie Stabenow | 2,151,278 (56.9%) | Michael Bouchard | 1,559,597 (41.3%) | 69,267 | D+15.7 |
| Minnesota | Amy Klobuchar | 1,278,849 (58.1%) | Mark R. Kennedy | 835,653 (37.9%) | 88,270 | D+20.1 |
| Mississippi | Erik R. Fleming | 213,000 (34.9%) | Trent Lott | 388,399 (63.6%) | 9,522 | R+28.7 |
| Missouri | Claire McCaskill | 1,055,255 (49.6%) | James M. Talent | 1,006,941 (47.3%) | 66,263 | D+2.3 |
| Montana flip | Jon Tester | 199,845 (49.2%) | Conrad Burns | 196,283 (48.3%) | 10,377 | D+0.9 |
| Nebraska | E. Benjamin Nelson | 378,388 (63.9%) | Pete Ricketts | 213,928 (36.1%) | D+27.8 | |
| Nevada | Jack Carter | 238,796 (41.0%) | John Ensign | 322,501 (55.4%) | 21,275 | R+14.4 |
| New Jersey | Bob Menendez | 1,200,843 (53.4%) | Tom Kean Jr. | 997,775 (44.3%) | 51,452 | D+9.0 |
| New Mexico | Jeff Bingaman | 394,365 (70.6%) | Allen W. McCulloch | 163,826 (29.3%) | 359 | D+41.3 |
| New York | Hillary Clinton | 3,008,428 (67.0%) | John Spencer | 1,392,189 (31.0%) | 89,436 | D+36.0 |
| North Dakota | Kent Conrad | 150,146 (68.8%) | Dwight Grotberg | 64,417 (29.5%) | 3,589 | D+39.3 |
| Ohio flip | Sherrod Brown | 2,257,369 (56.2%) | Mike Dewine | 1,761,037 (43.8%) | 830 | D+12.4 |
| Pennsylvania flip | Bob Casey, Jr. | 2,392,984 (58.6%) | Rick Santorum | 1,684,778 (41.3%) | 3,281 | D+17.4 |
| Rhode Island flip | Sheldon Whitehouse | 206,043 (53.5%) | Lincoln Chafee | 178,950 (46.5%) | D+7.0 | |
| Tennessee | Harold E. Ford, Jr. | 879,976 (48.0%) | Bob Corker | 929,911 (50.7%) | 23,808 | R+2.7 |
| Texas | Barbara Ann Radnofsky | 1,555,202 (36.0%) | Kay Bailey Hutchison | 2,661,789 (61.7%) | 97,672 | R+25.7 |
| Utah | Pete Ashdown | 177,459 (31.1%) | Orrin G. Hatch | 356,238 (62.4%) | 37,555 | R+31.3 |
| Vermont flip | none | Richard Tarrant | 84,924 (32.4%) | Bernie Sanders (Independent) 171,638 (65.4%) |
Ind. +33.0 | |
| Virginia flip | Jim Webb | 1,175,606 (49.6%) | George Allen | 1,166,277 (49.2%) | 28,562 | D+0.4 |
| Washington | Maria Cantwell | 1,184,659 (56.9%) | Mike McGavick | 832,106 (39.9%) | 66,969 | D+16.9 |
| West Virginia | Robert Byrd | 296,276 (64.4%) | John Raese | 155,043 (33.7%) | 8,565 | D+30.7 |
| Wisconsin | Herb Kohl | 1,439,214 (67.3%) | Robert Gerald Lorge | 630,299 (29.5%) | 68,784 | D+37.8 |
| Wyoming | Dale Groutage | 57,671 (29.9%) | Craig L. Thomas | 135,174 (70.0%) | 291 | R+40.1 |
Margin: the Democrat's share of all votes minus the Republican's. Margins are Democrat minus Republican, of all votes. Certified results, from the states' own archives, the MIT Election Data and Science Lab, Heideman (2026) and Algara & Amlani (2021). How these results were checked.