CREATE TABLE table_10799 ("Poll source" TEXT, "Date ( s )  administered" TEXT, "Sample size" TEXT, "Margin of error" TEXT, "Barbara Boxer  ( D ) " TEXT, "Carly Fiorina  ( R ) " TEXT, "Other" TEXT, "Undecided" TEXT)

what is the sample size when the date(s) administered is march 24, 2010?
SELECT "Sample size" FROM table_10799 WHERE "Date(s) administered" = 'march 24, 2010'
SELECT "Sample size" FROM "table_10799" WHERE "Date(s) administered" = 'march 24, 2010'