Bob Barnes reports for WaPo:

Richard Hasen, a prolific election law expert at the University of California at Irvine, wrote an op-ed for Reuters that called ballot selfies a “threat to democracy” that could revitalize the practice of selling votes and encourage “potential coercion from employers, union bosses and others.”

Others disagree, saying any kind of vote-selling scheme would be much more easily accomplished with absentee ballots.

Michael McDonald, an election law expert at the University of Florida, said verifying that someone voted a certain way by having them post proof on social media “would be easily detected.”

“As a way of stealing an election, this doesn’t seem a very effective method,” he said in an interview.

Moreover, anyone dumb enough to try it, McDonald said, would probably add a message: “I just made 20 bucks.”