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_21043 ( "Poll Source" text, "Dates administered" text, "Democrat: Vivian Davis Figures" text, "Republican: Jeff Sessions" text, "Lead Margin" real )

### Question ###
On July 31, 2008, what are the Democrat: Vivian Davis Figures percentages?

### Accurate SQL ###

SELECT "Democrat: Vivian Davis Figures" FROM table_21043 WHERE "Dates administered" = 'July 31, 2008'