CREATE TABLE table_18412 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

which section did seymour halpern run in
SELECT "District" FROM table_18412 WHERE "Incumbent" = 'Seymour Halpern'
SELECT "District" FROM "table_18412" WHERE "Incumbent" = 'Seymour Halpern'