CREATE TABLE table_18515 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

What is the candidates result that is tom j. murray (d) unopposed?
SELECT "Result" FROM table_18515 WHERE "Candidates" = 'Tom J. Murray (D) Unopposed'
SELECT "Result" FROM "table_18515" WHERE "Candidates" = 'Tom J. Murray (D) Unopposed'