user: Question: What is the largest Number of electorates (2009) with a Constituency number of Total:?
Columns: ['Constituency number', 'Name', 'Reserved for ( SC / ST /None)', 'District', 'Number of electorates (2009)']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['81', 'Chhata', 'None', 'Mathura', 258625.0]
SQL:

assistant: SELECT MAX("Number of electorates (2009)") FROM "Table" WHERE "Constituency number" = 'Total:';