CREATE TABLE table_3596 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" TEXT, "Result" TEXT, "Candidates" TEXT)

What party was represented by incumbent Richard Coulter ?
SELECT "Party" FROM table_3596 WHERE "Incumbent" = 'Richard Coulter'
SELECT "Party" FROM "table_3596" WHERE "Incumbent" = 'Richard Coulter'