ROCHESTER, N.H. — Democratic presidential hopeful Bernie Sanders, who cleaned up among young voters in the Iowa caucuses, launched a new series of ads Thursday in New Hampshire on Snapchat, the social messaging platform that is popular among the same demographic.

One of overlay ads Bernie Sanders is hoping will be spread by Snapchat users in New Hampshire. (Courtesy of Snapchat) One of the overlay ads Bernie Sanders is hoping will be spread by Snapchat users in New Hampshire. (Courtesy of Snapchat)

For the next six days, Snapchat users in New Hampshire will be able to send a series of “geofilter” ads to fellow users that feature cartoon images of Sanders driving his campaign bus by street signs that advertise some of his issues and initiatives.

The hope is that Sanders enthusiasts will overlay the images on their own videos and photos and send them along to friends. Someone, for example, could shoot video at a Sanders campaign event and add the overlay before sharing the image.

The 74-year-old Vermont senator used similar ads in Iowa, which were viewed more than 3 million times, according to Snapchat. He is the only Democratic candidate who has advertised on the platform, though both former secretary of state Hillary Clinton and former Maryland governor Martin O'Malley have maintained accounts.

In the Iowa caucuses, Clinton narrowly defeated Sanders overall, according to results tallied by the Iowa Democratic Party. Among those under 30, however, an astonishing 84 percent backed Sanders, according to entrance polls.

The battle continues in New Hampshire as candidates fight tooth and nail to take home the state. The Post's David Weigel walks through what it will take to win the New Hampshire primary. (Dalton Bennett/The Washington Post)