The Electoral Count Act of 1887 (ECA) (Pub. L. 49–90, 24 Stat. 373, later codified at Title 3, Chapter 1) is a United States federal law that added to procedures set out in the Constitution of the United States for the counting of electoral votes following a presidential election. In its unamended form, it last governed at the time of the 2021 United States Electoral College vote count. The Act has since been substantially amended by the Electoral Count Reform and Presidential Transition Improvement Act of 2022.
The Act was enacted by Congress in 1887, ten years after the disputed 1876 presidential election, in which several states submitted competing slates of electors and a divided Congress was unable to resolve the deadlock for weeks.