CREATE TABLE table_5859 ("District" FLOAT, "Incumbent" TEXT, "Party" TEXT, "Elected" FLOAT, "Status" TEXT)

What party has a district of 28 and was elected after 1983?
SELECT "Party" FROM table_5859 WHERE "Elected" > '1983' AND "District" = '28'
SELECT "Party" FROM "table_5859" WHERE "District" = '28' AND "Elected" > '1983'