CREATE TABLE table_18535 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

who athe party where district is louisiana 2?
SELECT "Party" FROM table_18535 WHERE "District" = 'Louisiana 2'
SELECT "Party" FROM "table_18535" WHERE "District" = 'Louisiana 2'