There are two places you can export lead information in the Analytics Dashboard - The List & Poll Tabs.
The List tab exports will provide you with customer data, their social ratings, influence and friends they have brought into the campaign site.
The Poll tab export will provide you with basic customer information AND their individual answers to your poll questions.
How to export Leads from the List tab
1) Go to the List tab in the Analytics Dashboard.
2) Select Filter Options & Export