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

### Instruction:
What was Democrat: Tom Harkin's percentage when the poll source was Rasmussen Reports and the lead margin was 14?

### Inputs:
table_name: table, columns: ['Poll Source', 'Dates administered', 'Democrat: Tom Harkin', 'Republican: Christopher Reed', 'Lead Margin']

### Response:
SELECT Democrat: Tom Harkin FROM table WHERE Poll Source = rasmussen reports AND Lead Margin = 14