What did a slave think of a carpetbagger?

Slaves may not have known (or just not cared) that the person was a carpetbagger. They just would vote for them because the carpetbagger was a republican (Abe Lincoln was a republican, so slaves kind of saw the whole party as being completely against slavery, which they mostly were). In other Words, they were probably happy that they could support an anti-slavery politician, and the carpetbagger was probably happy that he was getting some political power.