CREATE TABLE table_18146 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Results" CLOB, "Candidates" CLOB)

Who run for office in district Maryland 3?
SELECT "Candidates" FROM table_18146 WHERE "District" = 'Maryland 3'
SELECT "Candidates" FROM "table_18146" WHERE "District" = 'Maryland 3'