CREATE TABLE table_18117 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

what is the party with the incumbent jim demint?
SELECT "Party" FROM table_18117 WHERE "Incumbent" = 'Jim DeMint'
SELECT "Party" FROM "table_18117" WHERE "Incumbent" = 'Jim DeMint'