According to this story, the Conservative Campaign Committee PAC has launched a campaign to persuade voters to write-in State Senator Larry Grooms for U.S. House, in South Carolina’s upcoming special election in the First District. Grooms disavows the effort. However, South Carolina allows write-ins (for all office except President) and has no requirement that write-in candidates file a declaration of write-in candidacy. Therefore, there is nothing Grooms can do to stop the campaign for him.