This is from wikipedia...
"Before the debate at Charleston, Democrats held up a banner that read "Negro equality" with a picture of a white man, a negro woman and a mulatto child. At this debate Lincoln went further than before in denying the charge that he was an abolitionist, saying that:
"I am not, nor ever have been, in favor of bringing about in any way the social and political equality of the white and black races, that I am not nor ever have been in favor of making voters or jurors of negroes, nor of qualifying them to hold office, nor to intermarry with white people; and I will say in addition to this that there is a physical difference between the white and black races which I believe will forever forbid the two races living together on terms of social and political equality. And in as much as they cannot so live, while they do remain together there must be the position of superior and inferior, and I as much as any other man am in favor of having the superior position assigned to the white race. I say upon this occasion I do not perceive that because the white man is to have the superior position the negro should be denied everything."
http://en.wikipedia.org/wiki/Lincoln%E2%80%93Douglas_debatesToday such sentiments would certainly be denounced as 'racist', so call Lincoln a racist if you must.
Lincoln was no more racist than many people are today, both black and white. It's just hidden more, usually.