- Date: May 8, 2012
- Candidates:
- Democratic Primary
- Milwaukee Mayor Tom Barrett
- Former Dane County Executive Kathleen Falk
- Secretary of State Doug La Follette
- State Senator Kathleen Vinehout
- Gladys Huber – Protest Candidate
- Republican Primary
- Gov. Scott Walker
- Arthur Louis Kohl-Riggs – Protest Candidate
- Democratic Primary