Eric Trump shares illegal ballot selfie on Election Day

On Monday morning, Donald Trump's son, Eric Trump, went to a polling station in New York to proudly cast his vote for his father.

But what he did afterward is against the law in the state.

In a since-deleted tweet, Eric Trump posted a picture of his ballot with the caption, "It is an incredible honor to vote for my father. He will do such a great job for the USA. #MakeAmericaGreatAgain."

"A quick reminder to other New York voters: This is actually illegal. Please do not post a picture of your ballot (or a ballot selfie)," Electionland wrote in a tweet.

According to New York state law, residents are not allowed to share completed ballots with others or to photograph ballots in polling stations.

>> Are ballot selfies illegal?

Despite petitions filed by three New Yorkers to be able to snap ballot selfies, Manhattan Federal Judge P. Kevin Castel ruled Thursday that such a law would "remove a principal guarantee of election integrity that has been in use and successful for 126 years."