CREATE TABLE table_18518 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

Which district had Paul B. Dague as the incumbent?
SELECT "District" FROM table_18518 WHERE "Incumbent" = 'Paul B. Dague'
SELECT "District" FROM "table_18518" WHERE "Incumbent" = 'Paul B. Dague'