The event was supposed to be held at the Stock Pavillion on campus, but was moved at the last minute to the heart of campus at UW-Madison - the Memorial Union Terrace.
The event is part of what can only be described as a campus tour for the congressman from Texas.
Ron Paul has been speaking on college campuses all across the country, and has scheduled 30 more campuses over the next two months. Paul has fiery support from young voters who are energized by his anti-war policies.
However, that energy has not equaled votes. Paul has picked up only 50 delegates thus far, leading many to ask whether Wisconsin will be his last stop. Supporters say they hope not. They say if this goes to a brokered convention, it's anyone's game, and they feel Paul support is growing.
Paul brought his message of personal liberty, ending the wars in Iraq and Afghanistan and doing away with the Federal Reserve to a receptive crowd of thousands outside the University of Wisconsin student union.
Paul urged his supporters at his only planned campaign stop in Wisconsin Thursday not to give up. Paul said at a similar stop Wednesday at the University of Maryland that he has no plans to drop out of the presidential race even though he is a distant fourth.
Playing to the Wisconsin crowd, Paul says he believes in personal freedom so much he thinks people should be allowed to drink raw milk if they so choose.
A poll released earlier this week showed Paul with just 11 percent support in Wisconsin.
Paul told FOX6 News Thursday night he plans to stick with his campaign, especially if he continues to see the kind of support he saw Thursday night in Madison.
The Associated Press contributed to this report.