Is my/your vote secret?

Voting It's voting time in the US and something I recently noticed. A person running for office came to my door to ask for his support. We spoke for quite some time and it really seemed as this person really knew me. All of my political sidings. So, I asked how this person knew so much of me. First they pulled out a phone and showed me this app that made me feel as though it knew more about me than I do. I was simply amazed that it was able to discover so much about me. Over the next few day...
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