The Republican Party is white and Southern. How did that happen?

The Washington Post featured an analysis cowritten by Jeffery Jenkins of the USC Price School on why the Republican Party is primarily white and Southern.

“Historians and political scientists traditionally emphasize how the national Democratic Party began supporting civil rights, which alienated white Southern voters. But our research shows that it wasn’t just the Democrats who changed. The Republican Party in the South consciously chose to exclude blacks early in the 20th century, which helped it to dominate Southern politics decades later,” they wrote.

Full article here