Linda Dorf, et al., eds., American Historyy (Parsippany, NJ: Globe Fearon, Pearson Learning Group, 2003), 394.
During the debates, Lincoln spoke forcefully against premitting slavery in the territories. He said that the United States could not survive "half slave and half free." Douglas supported popular sovereignty, which was the right of territories to vote to allow or ban slavery within their borders. Neither man liked slavery, but they saw different ways of dealing with the issue.