CREATE TABLE table_18651 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What candidates ran in the election when john s. wood was the incumbent?
SELECT "Candidates" FROM table_18651 WHERE "Incumbent" = 'John S. Wood'
SELECT "Candidates" FROM "table_18651" WHERE "Incumbent" = 'John S. Wood'