CREATE TABLE table_18119 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

what is the party when candidates is jim demint (r) 80%?
SELECT "Party" FROM table_18119 WHERE "Candidates" = 'Jim DeMint (R) 80%'
SELECT "Party" FROM "table_18119" WHERE "Candidates" = 'Jim DeMint (R) 80%'