Stephen Colbert will campaign in South Carolina on Friday, one day before the state’s Republican presidential primary. And he promises a special guest appearance from none other than Herman Cain.

Having already instructed his supporters to vote for Cain, whose name will appear on the ballot despite his presidential campaign having ended, Colbert will attempt to get out the vote at the College of Charleston, likely to be one of his few bastions of real support when the voting begins Saturday. Here’s the video of Colbert making the announcement, which includes his Super PAC’s latest ad pleading for civility in the final days of the race: