A dry mathematical ratio became one of the most consequential decisions in American history. This episode traces the three-fifths compromise from a failed 1783 tax formula under the Articles of Confederation to its role in the 1787 Constitutional Convention, where Southern delegates reversed their position once the prize became seats in the House of Representatives.

The clause gave slave states far more seats and electoral votes than their free populations warranted, influencing the 1800 election, the gag rule and the defeat of the Wilmot Proviso. The episode examines the competing views of William Lloyd Garrison and Frederick Douglass, Akhil Reed Amar’s analysis, and how after the 14th Amendment, disenfranchisement let the South count its full Black population while denying them the vote.

• Why the South first argued enslaved people were property for tax purposes, then wanted them counted for representation
• Elbridge Gerry’s challenge and Gouverneur Morris’s insight that the tax trade-off was a bluff
• How Southern House seats rose from 33 to 47 in 1793 and from 73 to 98 by 1833
• Garrison’s view of a pro-slavery Constitution versus Douglass’s argument that the clause was a penalty
• The unenforced Section 2 of the 14th Amendment and decades of seniority-based Southern power