This data is for sale in most states, to anyone who registers as a political committee (that is, candidate campaigns, political parties, PACs, fundraising groups etc...)
In Illinois it includes all the data mentioned above, plus a history of which party primaries you voted in, and all of the political subdivision you are in.
We, the Illinois Green Party, used it to build a Rails app for transcribing our candidate's ballot petitions, and then verifying addresses and signatures to make sure we have sufficient valid signatures, and were turning in our best sheets. Once the Democratic machine tried to challenge the petitions, we would have the voterid already looked up. It allows us to spread transcription and lookup to a dozen volunteers, and cost less to build and run than one days of lawyer fees the machine had to pay to just file the doomed objections.
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This data is for sale in most states, to anyone who registers as a political committee (that is, candidate campaigns, political parties, PACs, fundraising groups etc...) In Illinois it includes all the data mentioned above, plus a history of which party primaries you voted in, and all of the political subdivision you are in. We, the Illinois Green Party, used it to build a Rails app for transcribing our candidate's ballot petitions, and then verifying addresses and signatures to make sure we have sufficient valid signatures, and were turning in our best sheets. Once the Democratic machine tried to challenge the petitions, we would have the voterid already looked up. It allows us to spread transcription and lookup to a dozen volunteers, and cost less to build and run than one days of lawyer fees the machine had to pay to just file the doomed objections.