CREATE TABLE table_27292 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

In what district was keith ellison the incumbent?
SELECT "District" FROM table_27292 WHERE "Incumbent" = 'Keith Ellison'
SELECT "District" FROM "table_27292" WHERE "Incumbent" = 'Keith Ellison'