CREATE TABLE table_18388 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Result" TEXT, "Candidates" TEXT)

who was the candidate elected to the democratic party in 1952?
SELECT "Candidates" FROM table_18388 WHERE "First elected" = '1952' AND "Party" = 'Democratic'
SELECT "Candidates" FROM "table_18388" WHERE "First elected" = '1952' AND "Party" = 'Democratic'