 how many result with candidates being richard j. welch (r) unopposed
CREATE TABLE "table1_1342233_6" (
  "district" text,
  "incumbent" text,
  "party" text,
  "first_elected" real,
  "result" text,
  "candidates" text
);
SELECT COUNT("result") FROM "table1_1342233_6" WHERE "candidates"='Richard J. Welch (R) Unopposed';