CREATE TABLE table_18328 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

When was Stephen J. Solarz first elected?
SELECT MIN("First elected") FROM table_18328 WHERE "Incumbent" = 'Stephen J. Solarz'
SELECT MIN("First elected") FROM "table_18328" WHERE "Incumbent" = 'Stephen J. Solarz'