Closest U.S. Senate elections in Hawaii

The tightest U.S. Senate races Hawaii has held, ranked by the margin between the top two candidates.

The closest U.S. Senate election in Hawaii history was in 1970, a margin of 3.1 points. Hiram L. Fong beat Cecil F. Heftel, 124,163 to 116,597. Next closest are 1964 (6.7 points) and 1976 (13.1 points).

Every state is ranked together on Closest U.S. Senate elections in history. For every Senate race Hawaii has held, special elections included, see the Hawaii U.S. Senate hub.

What is the closest Senate race in Hawaii history?

The Hawaii Senate election decided by the narrowest margin was in 1970, 3.1 points. Hiram L. Fong beat Cecil F. Heftel, 124,163 to 116,597. The next closest were 1964 (6.7 points) and 1976 (13.1 points).

How is the margin measured?

As the gap in vote share between the first and second-place finishers, from the certified general-election count. It is not adjusted for recounts, runoffs or later court rulings; the figure is the result as certified.

Does this include special elections?

No. These are the regular general elections for Hawaii’s two Senate seats. Special elections to fill a vacancy appear on the Hawaii Senate hub, which lists every race including specials, and in a few states one of those is closer than anything here.

Why does the list start in 1914?

Because senators were chosen by state legislatures before the Seventeenth Amendment. 1914 is the first cycle of the popular-vote era for the Senate, so it is the first Hawaii election with a popular margin to measure.

Closest U.S. Senate elections in Hawaii
#ElectionResultVotesMargin
11970Hiram L. Fong R def. Cecil F. Heftel D124,163 – 116,5973.1 points
21964Hiram L. Fong R def. Thomas P. Gill D110,747 – 96,7896.7 points
31976Spark M. Matsunaga D def. William Quinn R162,305 – 122,72413.1 points
42006Daniel K. Akaka D def. Cynthia Thielen R210,330 – 126,09724.6 points
52012Mazie K. Hirono D def. Linda Lingle R269,489 – 160,99424.8 points
61992Daniel K. Inouye D def. Rick Reed R208,266 – 97,92830.3 points
72024Mazie K. Hirono D def. Bob McDermott R324,194 – 160,07532.7 points
81962Daniel K. Inouye D def. Ben F. Dillingham R136,294 – 60,60738.4 points
92018Mazie K. Hirono D def. Ron Curtis R276,316 – 112,03542.3 points
102022Schatz Brian D def. McDermott Bob R290,894 – 106,35845.1 points
111986Daniel K. Inouye D def. Frank Hutchinson R241,887 – 86,91047.1 points
121994Daniel K. Akaka D def. Maria M. Hustace R256,189 – 86,32047.6 points
132000Daniel K. Akaka D def. John Carroll R251,215 – 84,70148.2 points
142016Brian Schatz D def. John Carroll R306,604 – 92,65348.9 points
152010Daniel K. Inouye D def. Cam Cavasso R277,228 – 79,93953.2 points
162004Daniel K. Inouye D def. Cam Cavasso R313,629 – 87,17254.5 points
171988Spark M. Matsunaga D def. Maria M. Hustace R247,941 – 66,98755.9 points
181980Daniel K. Inouye D def. Cooper Brown R224,485 – 53,06859.5 points
191998Daniel K. Inouye D def. Crystal Young R315,252 – 70,96461.4 points
201982Spark M. Matsunaga D def. Clarence J. Brown R245,386 – 52,07163.1 points
211974Daniel K. Inouye D def. James D. Kimmel P207,454 – 42,76765.8 points
221968Daniel K. Inouye D def. Wayne C. Thiessen R189,248 – 34,00868.4 points

How this ranking is measured

U.S. Senate general elections in Hawaii, ranked by the smallest gap in vote share between the top two finishers, 1914 to the present, closest 25 shown. Served from the senate_race_margin materialized view. Special elections are excluded, and so is any contest where the top two did not draw at least 1,000 votes between them or where the recorded winner was not the vote leader. The national list of the closest Senate races anywhere applies a 50,000-vote floor, which is why a small early race can appear here and not there.

Compiled by PolitiFinder · published June 14, 2026 · sources: Data & sources · data last verified September 30, 2026.