CiviCrm
Voter Vault
Spoke
Ecanvasser offers a host of candidate services ranging from $99 to $799 per month. Just looking to blast spam out to likely voters in your district?
Advocacy Data can help with that. If you need a CRM tailored for a political campaign that integrates with those services,
Nation Builder is there for you. Want to append voter list with GPS coordinates, emails and cell phones?
Aristotle stands by.