# 2016 United States Senate election in Oklahoma

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The 2016 United States Senate election in Oklahoma was held November 8, 2016 to elect a member of the United States Senate to represent the State of Oklahoma, concurrently with the 2016 U.S. presidential election, as well as other elections to the United States Senate in other states and elections to the United States House of Representatives and various state and local elections. The primaries were held June 28.
Incumbent Republican Senator James Lankford won re-election to a full term in office by a landslide margin of 43%, sweeping every county statewide in the Republican stronghold.

## Republican primary
### Candidates
#### Declared

* James Lankford, incumbent senator

## Democratic primary
### Candidates
#### Declared

* Mike Workman, political consultant and nominee for Labor Commissioner in 2014

#### Withdrew

* Steve Perry, attorney and nominee for OK-05 in 2008

#### Declined

* Dan Boren, former U.S. Representative
* Joe Dorman, former state representative, and nominee for Governor in 2014
* Brad Henry, former governor of Oklahoma
* Constance N. Johnson, former State Senator and nominee for the U.S. Senate in 2014

## Libertarian primary
### Candidates
#### Declared

* Dax Ewbank, Republican candidate for Governor in 2014
* Robert Murphy, independent candidate for OK-05 in 2014

### Results

Libertarian primary results :
| Party | Party | Candidate | Votes | % |
| | Libertarian | Robert Murphy | 1,537 | 58.89% |
| | Libertarian | Dax Ewbank | 1,073 | 41.11% |
| Total votes | Total votes | Total votes | 2,610 | 100.00% |

## General election
### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Safe R | November 2, 2016 |
| Sabato's Crystal Ball | Safe R | November 7, 2016 |
| Rothenberg Political Report | Safe R | November 3, 2016 |
| Daily Kos | Safe R | November 8, 2016 |
| Real Clear Politics | Safe R | November 7, 2016 |

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | James Lankford (R) | Mike Workman (D) | Undecided |
| SurveyMonkey | November 1–7, 2016 | 1,271 | ± 4.6% | 61% | 37% | 2% |
| SurveyMonkey | October 31–November 6, 2016 | 1,116 | ± 4.6% | 60% | 38% | 2% |
| SurveyMonkey | October 28–November 3, 2016 | 905 | ± 4.6% | 62% | 36% | 2% |
| SurveyMonkey | October 27–November 2, 2016 | 737 | ± 4.6% | 62% | 36% | 2% |
| SurveyMonkey | October 26–November 1, 2016 | 519 | ± 4.6% | 62% | 35% | 3% |
| SurveyMonkey | October 25–31, 2016 | 472 | ± 4.6% | 62% | 35% | 3% |

### Results

United States Senate election in Oklahoma, 2016 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | James Lankford (incumbent) | 980,892 | 67.74% | −0.11% |
| | Democratic | Mike Workman | 355,911 | 24.58% | −4.40% |
| | Libertarian | Robert T. Murphy | 43,421 | 3.00% | N/A |
| | Independent | Sean Braddy | 40,405 | 2.79% | N/A |
| | Independent | Mark T. Beard | 27,418 | 1.89% | −1.28% |
| Total votes | Total votes | Total votes | 1,448,047 | 100.0% | N/A |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

#### By congressional district

Lankford won all 5 congressional districts.
| District | Lankford | Workman | Representative |
| 1st | 65% | 27% | Jim Bridenstine |
| 2nd | 69% | 24% | Markwayne Mullin |
| 3rd | 76% | 17% | Frank Lucas |
| 4th | 68% | 23% | Tom Cole |
| 5th | 60% | 31% | Steve Russell |