CREATE TABLE table_37164 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "Elected" FLOAT, "Status" TEXT)

Who is the democratic incumbent that was re-elected?
SELECT "Incumbent" FROM table_37164 WHERE "Status" = 're-elected' AND "Party" = 'democratic'
SELECT "Incumbent" FROM "table_37164" WHERE "Party" = 'democratic' AND "Status" = 're-elected'