2024 Hawaii Amendment 1|
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| Choice | Votes | % |  
| Yes | 268,038 | 55.94% |  
| No | 211,142 | 44.06% |  
| Valid votes | 479,180 | 91.76% |  
| Invalid or blank votes | 43,056 | 8.24% |  
| Total votes | 522,236 | 100.00% |  
| Registered voters/turnout | 860,868 | 55.66% |  | 
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| Congressional district results
 
| Yes   70–80%    60–70%    50–60%  | No   90–100%    80–90%    70–80%    50–60%  | Other   No votes    |  | 
| Source: State of Hawaii Office of Elections | 
A referendum on the Amendment 1 to the Constitution of Hawaii was held on 5 November 2024. The amendment repealed the Hawaii's legislature's ability to limit marriage to heterosexual couples, reversing the 1998 Hawaii Amendment 2. The majority of the voters backed the measure; it succeeded in all four of Hawaii's major counties. The wording of the ballot language proved confusing to a number of voters, who were unsure of what the amendment accomplished. The amendment passed simultaneously with similar ones in California and Colorado.