The 1956 Wisconsin Supreme Court election was held on Tuesday, April 3, 1956 to elect a justice to a full ten-year seat the Wisconsin Supreme Court. Thomas E. Fairchild (son of incumbent justice Edward T. Fairchild – who was not seeking reelection) won the election. He handily defeated William H. Dieterich (a perennial candidate for state office, who later won a surprise victory in the 1958 election to the court).
Prior to the general election, a nonpartisan primary was held in which both Fairchild and Dieterich advanced against former state legislator Clair Finch.
Candidates Thomas E. Fairchild: former United States Attorney, former Wisconsin attorney general, and son of the outgoing incumbent justice William H. Dieterich: Milwaukee County-based lawyer; perennial candidate for state office; former special assistant attorney general of Wisconsin (1937–1938); former Wisconsin commander of the Disabled American VeteransMultiple sources: Clair Finch: former state legislator
Results
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| Primary election (March 6, 1956)
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General Election (April 3, 1956)
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