This is the entire St. Louis city Republican caucus of 2012 held at Forest Park Community College on 24 March. This is shot with the camera facing toward the "podium" where the principal speakers were located. I have also posted a comparable video of the caucus shot with a camera facing the crowd.
There were 291 Republicans who participated in the St. Louis city Republican caucus. The Ron Paul slate won with 157 (or 158) votes--it's a little unclear in the video. Regardless, they won all of the delegates from St. Louis city.