Some states also let you not-vote in a primary based on that information so you can register independent to vote in your choice of primaries. It's also not the

Some states also let you not-vote in a primary based on that information so you can register independent to vote in your choice of primaries. It's also not the greatest piece of information as evidenced in 2016 where Trump under-performed compared to other Republican positions (pg 6 vs pg 10 [1]). Like a party registration of Republican may likely mean you voted for their candidates but that's all it means, "likely". Empirically, people do not always vote their party registration (nevermind even vote). But I do find it annoying how trivially the state seems to give away all of your information that people are ok with using as authentication ... Or just to send you a ton of text messages. [1]: https://www.fec.gov/resources/cms-content/documents/federalelections2016.pdf https://www.fec.gov/resources/cms-content/documents/federale...