CREATE TABLE table_18579 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

how many result with candidates being richard j. welch (r) unopposed
SELECT COUNT("Result") FROM table_18579 WHERE "Candidates" = 'Richard J. Welch (R) Unopposed'
SELECT COUNT("Result") FROM "table_18579" WHERE "Candidates" = 'Richard J. Welch (R) Unopposed'