African Americans made up the majority of southern Republicans. After gaining voting rights in 1867, nearly all eligible black men registered to vote as Republicans. “It is the hardest thing in the world to keep a negro away from the polls,” observed an Alabama white man. Southern blacks did not all have identical political priorities, but they united in their desire for education and equal treatment before the law.

Northern whites who made the South their home after the war were a second element of the South’s Republican Party. Conservative white Southerners called them carpetbaggers, opportunists who stuffed all their belongings in a single carpet-sided suitcase and headed south to “fatten on our misfortunes.” But most Northerners who moved south were young men who looked upon the South as they did the West — as a promising place to make a living. Northerners in the southern Republican Party supported programs that encouraged vigorous economic development along the lines of the northern free-labor model.

Southern whites made up the third element of the South’s Republican Party. Approximately one out of four white Southerners voted Republican. The other three condemned the one who did as a traitor to his region and his race and called him a scalawag, a term for runty horses and low-down, good-for-nothing rascals. Yeoman farmers accounted for the majority of southern white Republicans. Some were Unionists who emerged from the war with bitter memories of Confederate persecution. Others were small farmers who wanted to end state governments’ favoritism toward plantation owners. Yeomen supported initiatives for public schools and for expanding economic opportunity in the South.

The South’s Republican Party, then, was made up of freedmen, Yankees, and yeomen — an improbable coalition. The mix of races, regions, and classes inevitably meant friction as each group maneuvered to define the party. But Reconstruction represents an extraordinary moment in American politics: Blacks and whites joined together in the Republican Party to pursue political change. Formally, of course, only men participated in politics — casting ballots and holding offices — but white and black women also played a part in the political struggle by joining in parades and rallies, attending stump speeches, and even campaigning.

Most whites in the South condemned southern Republicans as illegitimate and felt justified in doing whatever they could to stamp them out. Violence against blacks — the “white terror” — took brutal institutional form in 1866 with the formation in Tennessee of the Ku Klux Klan, a social club of Confederate veterans that quickly developed into a paramilitary organization supporting Democrats. The Klan went on a rampage of violence to defeat Republicans and restore white supremacy. Rapid demobilization of the Union army after the war left only twenty thousand troops to patrol the entire South. Without effective military protection, southern Republicans had to take care of themselves.