## Important dates for 2026 Colorado Primary Election There may be additional rules or exceptions to the deadlines shown. Please see voting information below for more details. ### Registering to Vote - Online applications must be submitted by June 22, 2026 - In-person applications must be submitted by June 22, 2026 - Mail-in applications must be received by June 22, 2026 - Same-day registration is available on Election Day, June 30, 2026 ### Voting - Mail-in ballots must be received by June 30, 2026 - Election Day is June 30, 2026 ## Recent elections - ### [2024 Colorado General Election](https://www.ballotready.org/elections/colorado-general-election-3d8a3c10-877b-45fc-b68b-173d5e6da30d) Colorado General Election was held on Tuesday, November 5, 2024. - ### [2024 Colorado Primary Election](https://www.ballotready.org/elections/colorado-primary-election-6e970a72-7de6-4a9e-8995-2b97dcbabe48) Colorado Primary Election was held on Tuesday, June 25, 2024. - ### [2024 Colorado Presidential Primary Election](https://www.ballotready.org/elections/colorado-partisan-primary-election) Colorado Presidential Primary Election was held on Tuesday, March 5, 2024. - ### [2022 Colorado General Election](https://www.ballotready.org/elections/colorado-2022-general-election) Colorado General Election was held on Tuesday, November 8, 2022. - ### [2022 Colorado Primary Election](https://www.ballotready.org/elections/colorado-primary-election-d763b8c0-56b8-42a9-99d1-2635c6abe297) Colorado Primary Election was held on Tuesday, June 28, 2022. - ### [2020 Colorado General Election](https://www.ballotready.org/elections/colorado-2020-general-election) Colorado General Election was held on Tuesday, November 3, 2020. - ### [2020 Colorado Primary Election](https://www.ballotready.org/elections/colorado-primary-election) Colorado Primary Election was held on Tuesday, June 30, 2020. - ### [2020 Colorado Presidential Primary Election](https://www.ballotready.org/elections/colorado-presidential-primary-election) Colorado Presidential Primary Election was held on Tuesday, March 3, 2020. - ### [2018 Colorado 2018 General Election](https://www.ballotready.org/elections/colorado-2018-general-election) Colorado 2018 General Election was held on Tuesday, November 6, 2018. - ### [2018 Colorado 2018 Primary Election](https://www.ballotready.org/elections/colorado-2018-primary-election) Colorado 2018 Primary Election was held on Tuesday, June 26, 2018. ## Counties in Colorado 01. [Adams County](https://www.ballotready.org/us/co-adams-county) 02. [Alamosa County](https://www.ballotready.org/us/co-alamosa-county) 03. [Arapahoe County](https://www.ballotready.org/us/co-arapahoe-county) 04. [Archuleta County](https://www.ballotready.org/us/co-archuleta-county) 05. [Baca County](https://www.ballotready.org/us/co-baca-county) 06. [Bent County](https://www.ballotready.org/us/co-bent-county) 07. [Boulder County](https://www.ballotready.org/us/co-boulder-county) 08. [Broomfield County](https://www.ballotready.org/us/co-broomfield-county) 09. [Chaffee County](https://www.ballotready.org/us/co-chaffee-county) 10. [Cheyenne County](https://www.ballotready.org/us/co-cheyenne-county) 11. [Clear Creek County](https://www.ballotready.org/us/co-clear-creek-county) 12. [Conejos County](https://www.ballotready.org/us/co-conejos-county) 13. [Costilla County](https://www.ballotready.org/us/co-costilla-county) 14. [Crowley County](https://www.ballotready.org/us/co-crowley-county) 15. [Custer County](https://www.ballotready.org/us/co-custer-county) 16. [Delta County](https://www.ballotready.org/us/co-delta-county) 17. [Denver County](https://www.ballotready.org/us/co-denver-county) 18. [Dolores County](https://www.ballotready.org/us/co-dolores-county) 19. [Douglas County](https://www.ballotready.org/us/co-douglas-county) 20. [Eagle County](https://www.ballotready.org/us/co-eagle-county) 21. [El Paso County](https://www.ballotready.org/us/co-el-paso-county) 22. [Elbert County](https://www.ballotready.org/us/co-elbert-county) 23. [Fremont County](https://www.ballotready.org/us/co-fremont-county) 24. [Garfield County](https://www.ballotready.org/us/co-garfield-county) 25. [Gilpin County](https://www.ballotready.org/us/co-gilpin-county) 26. [Grand County](https://www.ballotready.org/us/co-grand-county) 27. [Gunnison County](https://www.ballotready.org/us/co-gunnison-county) 28. [Hinsdale County](https://www.ballotready.org/us/co-hinsdale-county) 29. [Huerfano County](https://www.ballotready.org/us/co-huerfano-county) 30. [Jackson County](https://www.ballotready.org/us/co-jackson-county) 31. [Jefferson County](https://www.ballotready.org/us/co-jefferson-county) 32. [Kiowa County](https://www.ballotready.org/us/co-kiowa-county) 33. [Kit Carson County](https://www.ballotready.org/us/co-kit-carson-county) 34. [La Plata County](https://www.ballotready.org/us/co-la-plata-county) 35. [Lake County](https://www.ballotready.org/us/co-lake-county) 36. [Larimer County](https://www.ballotready.org/us/co-larimer-county) 37. [Las Animas County](https://www.ballotready.org/us/co-las-animas-county) 38. [Lincoln County](https://www.ballotready.org/us/co-lincoln-county) 39. [Logan County](https://www.ballotready.org/us/co-logan-county) 40. [Mesa County](https://www.ballotready.org/us/co-mesa-county) 41. [Mineral County](https://www.ballotready.org/us/co-mineral-county) 42. [Moffat County](https://www.ballotready.org/us/co-moffat-county) 43. [Montezuma County](https://www.ballotready.org/us/co-montezuma-county) 44. [Montrose County](https://www.ballotready.org/us/co-montrose-county) 45. [Morgan County](https://www.ballotready.org/us/co-morgan-county) 46. [Otero County](https://www.ballotready.org/us/co-otero-county) 47. [Ouray County](https://www.ballotready.org/us/co-ouray-county) 48. [Park County](https://www.ballotready.org/us/co-park-county) 49. [Phillips County](https://www.ballotready.org/us/co-phillips-county) 50. [Pitkin County](https://www.ballotready.org/us/co-pitkin-county) 51. [Prowers County](https://www.ballotready.org/us/co-prowers-county) 52. [Pueblo County](https://www.ballotready.org/us/co-pueblo-county) 53. [Rio Blanco County](https://www.ballotready.org/us/co-rio-blanco-county) 54. [Rio Grande County](https://www.ballotready.org/us/co-rio-grande-county) 55. [Routt County](https://www.ballotready.org/us/co-routt-county) 56. [Saguache County](https://www.ballotready.org/us/co-saguache-county) 57. [San Juan County](https://www.ballotready.org/us/co-san-juan-county) 58. [San Miguel County](https://www.ballotready.org/us/co-san-miguel-county) 59. [Sedgwick County](https://www.ballotready.org/us/co-sedgwick-county) 60. [Summit County](https://www.ballotready.org/us/co-summit-county) 61. [Teller County](https://www.ballotready.org/us/co-teller-county) 62. [Washington County](https://www.ballotready.org/us/co-washington-county) 63. [Weld County](https://www.ballotready.org/us/co-weld-county) 64. [Yuma County](https://www.ballotready.org/us/co-yuma-county)