The 1887 United States Senate election in Wisconsin was held in the 38th Wisconsin Legislature on Incumbent Republican U.S. senator Philetus Sawyer was re-elected on the first ballot.

At the start of the 1887 term, Republicans held substantial majorities in both chambers of the Wisconsin Legislature, so had more than enough votes to elect a Republican .

Major candidates Democratic John Winans, former U.S. representative of Wisconsin's 1st congressional district, incumbent state representative and incumbent mayor of Janesville, Wisconsin.

Republican Philetus Sawyer, incumbent U.S. senator, former U.S representative, and former mayor of Oshkosh, Wisconsin.

Labor John M. Cochrane, founder and former master of the Wisconsin Grange.

Results

Notes

References