Justin Timberlake did it.
So did the spokesman for the New Mexico attorney general.
Timberlake posted a selfie of himself in a Tennessee voting booth on Instagram; AG spokesman James Hallinan posted his ballot – complete with his vote for Hillary Clinton – on his personal Twitter account. They and others would argue it’s a matter of transparency and pride in doing your civic duty.
And in fact 44 states allow photography in a polling place, while 32 allow you to share a photo of your ballot. Federal judges have struck down Election Day selfie bans in New Hampshire and Indiana, and rules have been changed in California and Rhode Island. New Mexico law prohibits voters from showing their marked paper ballot “to any person in such a way as to reveal its contents,” but there are no penalty provisions that would make a ban enforceable.