Hillary Clinton's leading primary opponent Bernie Sanders just drew a massive, 10,000-person crowd

By Colin Campbell

US Sen. Bernie Sanders (I-Vermont) appears to be gaining some real traction as he campaigns for the 2016 Democratic presidential nomination.

According to the Associated Press, The Guardian, and other outlets, Sanders drew a huge, 10,000-person crowd while campaigning in Wisconsin on Wednesday. Sanders' campaign proclaimed it "the largest turnout so far this campaign season" for any presidential candidate.

The photos are fairly stunning, especially because Sanders is viewed as a long shot against the Democratic front-runner, former Secretary of State Hillary Clinton. Of all her fellow party rivals, however, Sanders is polling the strongest.

"This campaign is not about Bernie Sanders. It is not about Hillary Clinton or anybody else. It is about you," Sanders said before the crowd, according to his 2016 team.

View some images of the event below:

Tonight we made a little bit of history as 10,000 came out to support our progressive agenda in Madison, Wisconsin. pic.twitter.com/LHqpy4GjbL

— Bernie Sanders (@BernieSanders) July 2, 2015

#BernieSanders update: - Had 10,000 people attend Wisconsin rally Wed. night - Has raised $15 million in two months https://t.co/KeD9ATfeAU

— Taylor Popielarz (@TaylorPopielarz) July 2, 2015

AP reports 10,000 packed Coliseum for @BernieSanders event in Madison WI. Largest event yet for a 2016 candidate pic.twitter.com/PiC8sepWcu

— John Nichols (@NicholsUprising) July 2, 2015

Another view of the crowd for @BernieSanders. pic.twitter.com/e0Oyf63pzs

— Alex Seitz-Wald (@aseitzwald) July 2, 2015