CREATE TABLE table_18694 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

Who were the candidates in the election in the Tennessee 9 district?
SELECT "Candidates" FROM table_18694 WHERE "District" = 'Tennessee 9'
SELECT "Candidates" FROM "table_18694" WHERE "District" = 'Tennessee 9'