- Chosen by
- Retention after appointment
- Justices
- 7
- Term
- 8 years
- Retirement age
- 72
- Next election
- Not confirmed
Court facts checked November 4, 2026; election dates checked November 4, 2026.
Justices
| Justice | Role |
|---|
| Susan Christensen | Chief justice |
| Thomas D. Waterman | Associate justice |
| Edward M. Mansfield | Associate justice |
| Christopher McDonald | Associate justice |
| Dana Oxley | Associate justice |
| Matthew McDermott | Associate justice |
| David May | Associate justice |
Court facts checked November 4, 2026.
Results 2016-2024
2024
SUPREME COURT JUSTICE - DAVID MAY
| Answer | Votes | Share |
|---|
| Yes | 776,472 | 63.3% |
| No | 450,373 | 36.7% |
2020
SUPREME COURT JUSTICE: CHRISTOPHER MCDONALD
| Answer | Votes | Share |
|---|
| Yes | 825,661 | 71.3% |
| No | 332,499 | 28.7% |
SUPREME COURT JUSTICE: EDWARD MANSFIELD
| Answer | Votes | Share |
|---|
| Yes | 802,356 | 69.2% |
| No | 356,374 | 30.8% |
SUPREME COURT JUSTICE: SUSAN KAY CHRISTENSEN
| Answer | Votes | Share |
|---|
| Yes | 859,886 | 73.0% |
| No | 317,598 | 27.0% |
SUPREME COURT JUSTICE: THOMAS WATERMAN
| Answer | Votes | Share |
|---|
| Yes | 809,058 | 69.9% |
| No | 348,665 | 30.1% |
2016
SUPREME COURT JUDGE: BRENT R. APPEL
| Answer | Votes | Share |
|---|
| Yes | 695,801 | 64.4% |
| No | 385,305 | 35.6% |
SUPREME COURT JUDGE: DARYL L. HECHT
| Answer | Votes | Share |
|---|
| Yes | 688,680 | 64.1% |
| No | 385,981 | 35.9% |
SUPREME COURT JUDGE: MARK S. CADY
| Answer | Votes | Share |
|---|
| Yes | 705,403 | 65.3% |
| No | 374,909 | 34.7% |
No contests in the data for 2022, 2018.
November general elections only.
MEDSL precinct returns 2016-2024: a fixed historic release; the file records no release date.
Iowa overview: statewide officials, legislature and elections