BallotBook
http://www.ballotbook.com/Social media meets politics
Geo-locate voters and match them to a comprehensive list of political candidates in their area. We match voters to political juridictions from the national to the city level. Information on candidates (bio, twitter, news, messages) Geo-targeted ad system for candidates to reach only voters in their jurisdiction with ads, polls, surveys, etc.
Angel list: https://angel.co/company/ballotbook