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_20032301_3 (tom_horner__i_ VARCHAR, sampling_error VARCHAR)

### Question ###
What percentage voted for Tom Horner according to the poll source with sampling error of 2.5%?

### Accurate SQL ###

SELECT tom_horner__i_ FROM table_20032301_3 WHERE sampling_error = "2.5%"