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_70 (swing_to_gain INTEGER, winning_party_2007 VARCHAR, rank VARCHAR)

### Question ###
What's the sum of swing to gain with a winning party 2007 of Conservative with a rank smaller than 5?

### Accurate SQL ###

SELECT SUM(swing_to_gain) FROM table_name_70 WHERE winning_party_2007 = "conservative" AND rank < 5