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_48 (swing_to_gain INTEGER, constituency VARCHAR)

### Question ###
Can you tell me the sum of Swing to gain that has Constituency of caithness, sutherland and easter ross?

### Accurate SQL ###

SELECT SUM(swing_to_gain) FROM table_name_48 WHERE constituency = "caithness, sutherland and easter ross"