https://www.vox.com/the-goods/2018/11/6/18068224/voting-selfie-state-laws

Instagram is flooded with “I Voted” selfies. But rules about taking pictures at your polling site vary widely.

If you voted in the midterm elections, but didn’t post about it on social media, did it really happen? Yes. Obviously. Still, the pull of the voting selfie is strong.