Library Mall buzzed with activity Monday in preparation for President Barack Obama?s visit Tuesday, a rally intended to excite Democrats for the November election. On an autumn day bright with sunshine, workers put up risers, lights and a sound system at the site of the UW-Madison rally, wedged between Memorial Library, the Wisconsin Historical Society and State Street. Many UW-Madison students cited the historic opportunity to see a sitting president, even if they aren?t his biggest fan.