Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_84 (other VARCHAR, joe_sestak__d_ VARCHAR, margin_of_error VARCHAR, pat_toomey__r_ VARCHAR)

### Question ###
WHAT CANDIDATE HAD A MARGIN OF ERROR OF ± 4.5%, WHEN PAT TOOMEY WAS 45% AND JOE SESTAK WAS 38%?

### Accurate SQL ###

SELECT other FROM table_name_84 WHERE margin_of_error = "± 4.5%" AND pat_toomey__r_ = "45%" AND joe_sestak__d_ = "38%"