CREATE TABLE table_59518 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT)

What District was Incumbent Steve Israel First elected after 1998 in the Democratic party?
SELECT "District" FROM table_59518 WHERE "First elected" > '1998' AND "Party" = 'democratic' AND "Incumbent" = 'steve israel'
SELECT "District" FROM "table_59518" WHERE "First elected" > '1998' AND "Incumbent" = 'steve israel' AND "Party" = 'democratic'