user: Question: What is the total number of electorates in 2009 with a constituency of 193?
Columns: ['Constituency number', 'Name', 'Reserved for ( SC / ST /None)', 'District', 'Number of electorates (2009)']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['191', 'Alirajpur', 'ST', 'Alirajpur', 155726.0]
SQL:

assistant: SELECT "Number of electorates (2009)" FROM "Table" WHERE "Constituency number" = '193';