CREATE TABLE table_41675 ("Poll Source" TEXT, "Date ( s )  administered" TEXT, "Sample size" FLOAT, "Margin of Error" TEXT, "Mel Martinez  ( R ) " TEXT, "Betty Castor  ( D ) " TEXT)

What is the percentage for Mel Martinez when the sample size is 800?
SELECT "Mel Martinez (R)" FROM table_41675 WHERE "Sample size" = '800'
SELECT "Mel Martinez (R)" FROM "table_41675" WHERE "Sample size" = '800'