CREATE TABLE table_18147 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Results" TEXT, "Candidates" TEXT)

List the candidates in district Maryland 1 where the republican party won.
SELECT "Candidates" FROM table_18147 WHERE "Party" = 'Republican' AND "District" = 'Maryland 1'
SELECT "Candidates" FROM "table_18147" WHERE "District" = 'Maryland 1' AND "Party" = 'Republican'