CREATE TABLE table_18384 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What was the party of the first elected candidate in 1954?
SELECT "Party" FROM table_18384 WHERE "First elected" = '1954'
SELECT "Party" FROM "table_18384" WHERE "First elected" = '1954'