(CNN) With less than a week until the Iowa caucuses, Hillary Clinton, Bernie Sanders and Martin O'Malley have turned to the one place where they are ensured to get the attention of a younger audience: Snapchat.

According to Snapchat, more than 100 million people use the app every day and it draws a notoriously young audience, with 37% of their monthly users being in the coveted 18 to 24 age group. Most of the candidates have taken advantage of the behind-the-scenes aspect of the app and started their own channel where they upload snaps from the trail, videos of their yuuuge crowds, or selfies with Jimmy Fallon (we're looking at you, Hillary Clinton.)

Sanders' campaign has even put money behind their snap-strategy and purchased a nine-day ad buy in Iowa, where users in the region can use Bernie-themed geo-filters to add to their own picture or video.

"We're leveraging Snapchat to help us turn out young caucus-goers in Iowa who know Sen. Sanders is the best candidate to make college affordable, fight climate change and take on a corrupt political system," Kenneth Pennington, Bernie Sanders' digital director told CNN.

But Snapchat goes beyond the obligatory selfies and mesmerizing filters. With Snapchat's Discover section, users are able to flip through visual stories, news articles and original videos that let brands and political figures attract this sought-after audience.

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