Since selfie was the word of the year in 2013, it is but natural that many Americans who just voted on Monday would also post their photos on social media as proof that they did their civic duty by casting their ballot.

From political candidates to new voters, taking a photo of themselves using their smartphones while at the polling precinct or voting booth was the "in" thing that the hastag #VoterSelfie became trending on Twitter.

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One of the most interesting photos, which is actually a groupie and not a selfie, is that of Michele Corigliano, Jackie Alvidrez and Cardiff Gerhardt who posted the image on Corigliano's Instagram account and was reposted on Twitter by World News Tonight. The groupie was also run by ABC News.

It featured the trio with red-and-white "I Voted" stickers on different parts of their faces. However, the stickers eventually ran out, so some voters opted to instead take a selfie inside voting booths as proof of having cast their ballots.

One place where stickers had ran out was in Brooklyn, tweeted Mash-up America, which is nevertheless considered the best news of the day because it meant that voter turnout was high.

The high turnout prompted Winona Writer to ask: "Would you credit a high turnout to political fervor or... to #VoterSelfie?"

In New Hampshire, however, taking selfies while holding a marked ballot is considered an offense and violators face a $1,000 fine. The American Civil Liberties Union (ACLU) challenged the ban and filed a First Amendment lawsuit.

"There is no more potent way to communicate one's support for a candidate than to voluntarily display a photograph of one's marked ballot depicting one's vote for that candidate," the Washington Post quotes the ACLU.

The ACLU also called the voter selfie trend a form of political message communicating "constitutionally-protected" ideas not related to vote buying.

It seems that not only American voters but also Brazilian voters did selfies during the South American country's presidential election in October. Even then candidates Dilma Rousseff (who won the election) and Aecio Neves took selfies.

Likewise, selfies too were observed in the Scotland's recent independence referendum, with First Minister Alex Salmond seen doing selfies.

Tags#Voterselfie, aclu, New Hampshire, midterm elections, U.S. election, election selfies, Twitter trend