She'll do best in the Black Belt and coastal regions.
Since people are asking for maps and I like maps, here's what I think the county map might look like, assuming Trump wins 51-46-3:
And here's a map of what I think Clinton's vote share will be in each county:
Nice---- assuming you are looking at a uniform swing?
Still think there is a decent chance that Georgetown and Beaufort counties flip if the elections were held tomorrow.
Also, not quite sure the % scale is for the color schemes.... I'm assuming you are using standard Atlas scaling, but wouldn't mind a legend to go with the maps.
Looking at a more or less uniform swing because I'm too lazy to figure out a county-by-county swing. I did have the northwestern part of the state swing a little bit towards Trump.
I'm assuming that the election will tighten a little between today and Election Day. If the election were held today, I think Clinton would have a decent chance of winning SC.
I used standard Atlas scaling. I'll update my post to reflect that.