After a close election loss to Fritz Hollings in 1966, the Republicans felt that Parker might have a chance at defeating Hollings by riding Nixon's coattails in the general election. However, the Republicans did not provide Parker with the financial resources to compete and he subsequently lost by a bigger margin to Hollings than two years prior.
"Supplemental Report of the Secretary of State to the General Assembly of South Carolina." Reports and Resolutions of South Carolina to the General Assembly of the State of South Carolina. Volume II. Columbia, SC: 1969, p. 19.
Kalk, Bruce H. (2001). The Origins of the Southern Strategy: Two-Party Competition in South. Lexington Books. p. 86.