Peter Wehner mulls other parallels:
Abraham Lincoln is a unique figure in American history, and there is a danger in measuring the quality of our arguments by the quality of his. But there is a lot to be said for holding him up as the ideal. And if you read the words of Lincoln, you will find him constantly making his case in a compelling and philosophically serious way. That is what is most notable about his debates with Stephen Douglas.
The burden was on Lincoln to show why Douglas’s advocacy for “popular sovereignty” was incompatible with self-government and the moral meaning of the Declaration of Independence which is precisely what Lincoln did. If you read the transcripts of the debates, there was plenty of “negative” campaigning going on. But it is long forgotten, because the quality of the debate was so good and the stakes so high. The lesson for us is to aim high, not low, when it comes to the caliber of arguments we make to the public.