Benjamin Franklin "Bluff" Wade was an American lawyer and politician who served as a United States Senator for Ohio from 1851 to 1869. He is known for his leading role among the Radical Republicans. Had the 1868 impeachment of U.S. President Andrew Johnson led to a conviction in the Senate, as president pro tempore of the U.S. Senate, Wade would have become president for the remaining nine months of Johnson's term.

The Radical Republicans were a faction within the Republican Party originating from the party's founding in 1854—some six years before the Civil War—until the Compromise of 1877, which effectively ended Reconstruction. They called themselves "Radicals" because of their goal of immediate, complete, and permanent eradication of slavery in the United States. They were opposed during the war by the Moderate Republicans, and by the Democratic Party. Radicals led efforts after the war to establish civil rights for former slaves and fully implement emancipation. After unsuccessful measures in 1866 resulted in violence against former slaves in the rebel states, Radicals pushed the Fourteenth Amendment for statutory protections through Congress. They opposed allowing ex-Confederate officers to retake political power in the Southern U.S., and emphasized equality, civil rights and voting rights for the "freedmen", i.e., former slaves who had been freed during or after the Civil War by the Emancipation Proclamation and the Thirteenth Amendment.