a geeky activist building internet tools to shake up a broken political system. act.ly, GovLuv.org, TweetProgress.us, WhiteHouse2.org, and NationBuilder.com
You need the campaign addon enabled to import voter districts, and if you want to import federal and state upper/lower (as opposed to just all the rest), you will need to turn off automatic districting, as otherwise NationBuilder will automatically populate those fields for you. You can turn it off under Settings > Campaign.