This table is updated after each state completes its nominating process. Currently, 56 jurisdictions have completed their nominating processes: Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Marianas, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virgin Islands, Virginia, Washington, West Virginia, Wisconsin, Wyoming.
'Offices with Only One Major Party Candidate' - for purposes of this listing- are deemed to be those election contests in which there is only one major party candidate (reference The Classification of Political parties listed on TheGreenPapers.com) running for a given office on the ballot. Candidates of a Major Party who might be running as write-in or balloted as a minor party candidate (a party other than ) are not counted as having been formally nominated as Major Party candidates in this tabulation.
Parties appear in parenthesis and italics when a candidate receives the endorsement of a given Party and/or official sources indicate a candidate's association with a particular Party but only where the Party in question does not appear on the actual ballot as such.
| Office | Candidates with | |||
|---|---|---|---|---|
| No balloted opposition | Some Third Party and/or Independent balloted opposition | Total | ||
| Congressman | Republican | 7 | 1 | 8 |
| Democratic | 5 | 6 | 11 | |
| Senator | Republican | 0 | 1 | 1 |
| Totals | 12 | 8 | 20 | |
Alabama
- House CD 5
- Republican - Member of Congress Morris J. "Mo" Brooks, Jr.
- House CD 6
- Republican - Member of Congress Gary Palmer
- House CD 7
- Democratic - Member of Congress Terrycina Andrea "Terri" Sewell
Arkansas
- Senate Class 2
- Republican - Senator Thomas B. "Tom" Cotton
- Libertarian - Ricky Dale Harrington, Jr.
- House CD 1
- Republican - Member of Congress Eric Alan "Rick" Crawford
Florida
- House CD 2
- Republican - Member of Congress Neal Patrick Dunn
- House CD 25
- Republican - Member of Congress Mario Diaz-Balart
Illinois
- House CD 8
- Democratic - Member of Congress S. Raja Krishnamoorthi
- Libertarian - Preston Gabriel Nelson
Massachusetts
- House CD 1
- Democratic - Member of Congress Richard E. Neal
- (Democratic); Write-in - Alex B. Morse
- House CD 3
- Democratic - Member of Congress Lori Loureiro Trahan
- House CD 7
- Democratic - Member of Congress Ayanna S. Pressley
- Independent - Roy A. Owens, Sr.
- Write-in; (Republican) - Rayla Danella Campbell
- House CD 8
- Democratic - Member of Congress Stephen F. Lynch
- Healthcare Environment Stability - Jonathan D. "Jon" Lott
Mississippi
- House CD 4
- Republican - Member of Congress Steven McCarty Palazzo
New York
- House CD 5
- Democratic - Member of Congress Gregory Weldon Meeks
- House CD 16
- Democratic - Jamaal A. Bowman
- Conservative - Patrick McManus
- Working Families - Kenneth Schaeffer
North Carolina
- House CD 12
- Democratic - Member of Congress Alma Shealey Adams
Rhode Island
- House CD 1
- Democratic - Member of Congress David N. Cicilline
- (Republican); Independent - Frederick J. Joseph "Fred" Wysocki
- Independent - Jeffrey Edward Lemire
South Dakota
- House At-Large
- Republican - Member of Congress Dustin "Dusty" Johnson
- Libertarian - Randy "Uriah" Luallin
Tennessee
- House CD 5
- Democratic - Member of Congress James H. S. "Jim" Cooper
Virginia
- House CD 9
- Republican - Member of Congress H. Morgan "Morgan" Griffith
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