1. ^Oklahoma Territory and Indian Territory joined the Union as the State of Oklahoma on November 16, 1907.
2. ^^{1 2 3 4 5} Died.
3. ^^1 2 Resigned.
4. ^^{1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25} Appointed by governor to fill vacancy.
5. ^Resigned.
6. ^Resigned.
7. ^Resigned.
8. ^Before Lyon's swearing-in on January 11, B.F. Harrison resigned on January 2, and H. G. Oliver was appointed for the nine-day interim.
9. ^Resigned.
10. ^Resigned.
11. ^Resigned.
12. ^Resigned.
13. ^A Democrat, Hugh L. Harrell, won the Treasurer’s race in 1934, but resigned after just a few weeks into his term to become President of the Wichita Land Bank, leading to Bolen’s appointment.  
14. ^Resigned.
15. ^Resigned.
16. ^Resigned.
17. ^Resigned.
18. ^Resigned.
19. ^Resigned.
20. ^After an amendment was passed in 1975, the office was to no longer be elected but, rather, appointed by the Governor. This was to go into effect in 1979, but due to John Roger's early resignation, the amendment de facto went into effect early.
21. ^Office became an appointed position by the Governor.
22. ^Resigned.
23. ^Resigned.
24. ^Office became an elected statewide position again.
25. ^Elected in special election in November 1994 to succeed Boren.
26. ^Frank Lucas won a special election in May to succeed Glenn English.
27. ^Resigned.
28. ^Corporation Commissioner Cody L. Graves (D) resigned; Denise Bode (R) was appointed by Gov. Keating to replace Graves. [https://www.occeweb.com/Comm/2015%20COMMISSIONER%20CHRONOLOGY.pdf]
29. ^A Republican, Mike Schulz, won a special election in May in District 38 to succeed Democrat Robert M. Kerr, flipping the seat.  
30. ^Nancy Riley of District 37 switched parties from Republican to Democrat in August after losing the Lt. Gubernatorial primary.  
31. ^Corporation Commissioner Denise Bode (R) resigned; Jim Roth (D) was appointed by Gov. Henry to replace Bode. [https://www.occeweb.com/Comm/2015%20COMMISSIONER%20CHRONOLOGY.pdf]
32. ^A Republican, Todd Russ, won a special election to succeed a Democrat, Ryan McMullen, who resigned to take an appointment in the U.S. Department of Agriculture.  
33. ^{{cite web|url=https://www.reuters.com/article/us-usa-trump-epa-idUSKBN13W2HE|title=Trump to tap Oklahoma attorney general to lead EPA: transition team|date=December 7, 2016|publisher=Reuters}}
34. ^A Democrat, J.J. Dossett, won a special election vacated after Rick Brinkley, a Republican, resigned his seat after being charged with embezzlement from the Better Business Bureau.  
35. ^A Democrat, Cyndi Munson, won a special election after David Dank, the Republican incumbent, died.  
36. ^Appointed to replace Pruitt. Kara Rodriguez (R) was acting Attorney General from February 17-20.