Importing leads into multiple Campaigns at the same time.

When importing leads through the admin tab (Lead Import) and within step 3 of the import process there is not a spot where importee can import leads into a campaign. For example I have 80,000 leads to import and I have 5,000 leads for each campaign. So I have 20 campaigns. The way the system is setup now, is I have to do 20 imports because there is no mapping for the campain section in step 3 of a lead import.

This would be similiar to import owners for records. You do so by having an Owner column and then having id of the employee who will own the record(s). This is the same function we are looking for but to have it ability to do with campaigns.