| Election Name: | 2012 Hawaii Senate election |
| Country: | Hawaii |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2010 Hawaii Senate election |
| Previous Year: | 2010 |
| Next Election: | 2014 Hawaii Senate election |
| Next Year: | 2014 |
| Seats For Election: | All 25 seats in the Hawaii Senate |
| Leader1: | Brickwood Galuteria |
| Party1: | Democratic Party (Hawaii) |
| Leaders Seat1: | District 12 |
| Seats Before1: | 24 |
| Seats After1: | 24 |
| Popular Vote1: | 165,035 |
| Percentage1: | 68.13% |
| Leader2: | Sam Slom |
| Party2: | Republican Party (Hawaii) |
| Leaders Seat2: | District 9 |
| Seats Before2: | 1 |
| Seats After2: | 1 |
| Popular Vote2: | 72,264 |
| Percentage2: | 29.83% |
| Senate President | |
| Posttitle: | President-elect |
| Before Election: | Shan Tsutsui |
| Before Party: | Democratic Party (Hawaii) |
| After Election: | Donna Mercado Kim |
| After Party: | Democratic Party (Hawaii) |
The 2012 Hawaii Senate Elections were held on November 6, 2012. State senators in all 25 districts of the Hawaii Senate were up for election. 9 seats were won in the primary uncontested. No seats changed parties in this election.
No seats were lost as a result of the decennial reappropriation of districts. Only 2 incumbent senators were not reelected. District 11 Senator Carol Fukunaga was defeated by fellow Democratic Senator Brian Taniguchi (formerly District 10) in the primary.[1] Pohai Ryan, incumbent District 25 senator, was defeated by Laura Thielen in the primary.
| Hawaii Senate elections, 2012 General election — November 6, 2012 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Party | Votes | Percentage | Contested | Before | After | +/– | ||
| Democratic | 165,035 | 68.13% | 16 | 24 | 24 | |||
| Republican | 72,264 | 29.83% | 1 | 1 | 1 | |||
| Green | 4,929 | 2.03% | 0 | 0 | 0 | |||
| Totals | 100.00% | 17 | 25 | 25 | ||||
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