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

### Instruction:
What was the lead margin when Schweitzer had 55% and Jones had 2%?

### Inputs:
table_name: table, columns: ['Poll Source', 'Dates administered', 'Democrat: Brian Schweitzer', 'Republican: Roy Brown', 'Libertarian: Stan Jones', 'Lead Margin']

### Response:
SELECT SUM Lead Margin FROM table WHERE Democrat: Brian Schweitzer = 55% AND Libertarian: Stan Jones = 2%