Before the [[American Civil War]], Democrats supported slavery and the Dred Scott decision, which did create a bias that favored whites over blacks even in issues far less than Presidential elections. It was the Republican [[Abraham Lincoln]] who led opposition to slavery and the Dred Scott decision. | Before the [[American Civil War]], Democrats supported slavery and the Dred Scott decision, which did create a bias that favored whites over blacks even in issues far less than Presidential elections. It was the Republican [[Abraham Lincoln]] who led opposition to slavery and the Dred Scott decision. |