CREATE TABLE table_76980 ("Poll source" TEXT, "Dates administered" TEXT, "Jim DeMint  ( R ) " TEXT, "Alvin Greene  ( D ) " TEXT, "Tom Clements  ( G ) " TEXT, "Other" TEXT, "Undecided" TEXT)

Which poll source determined undecided of 5% and Jim DeMint (R) of 58%?
SELECT "Poll source" FROM table_76980 WHERE "Undecided" = '5%' AND "Jim DeMint (R)" = '58%'
SELECT "Poll source" FROM "table_76980" WHERE "Jim DeMint (R)" = '58%' AND "Undecided" = '5%'