CREATE TABLE table_29254 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "Elected" FLOAT, "Status" CLOB, "Result" CLOB)

What is the district with the result mac collins (r) unopposed?
SELECT "District" FROM table_29254 WHERE "Result" = 'Mac Collins (R) unopposed'
SELECT "District" FROM "table_29254" WHERE "Result" = 'Mac Collins (R) unopposed'