Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the smallest electorate for the Conservative party in South West Devon constituency, with over 2 conservatives and a name of Plymstock Radford?

### Inputs:
table_name: table, columns: ['Name', 'Labour', 'Conservative', 'Political party', 'Electorate', 'Constituency']

### Response:
SELECT MIN Electorate FROM table WHERE Political party = conservative AND Constituency = south west devon AND Conservative > 2 AND Name = plymstock radford