CREATE TABLE table_50753 ("Poll source" CLOB, "Date ( s )  administered" CLOB, "Sample size" FLOAT, "Margin of error" CLOB, "Joe Sestak  ( D ) " CLOB, "Pat Toomey  ( R ) " CLOB, "Other" CLOB, "Undecided" CLOB)

WHAT CANDIDATE HAD A MARGIN OF ERROR OF 4.5%, WHEN PAT TOOMEY WAS 45% AND JOE SESTAK WAS 38%?
SELECT "Other" FROM table_50753 WHERE "Margin of error" = '± 4.5%' AND "Pat Toomey (R)" = '45%' AND "Joe Sestak (D)" = '38%'
SELECT "Other" FROM "table_50753" WHERE "Joe Sestak (D)" = '38%' AND "Margin of error" = '± 4.5%' AND "Pat Toomey (R)" = '45%'