NEW YORK, NY - SEPTEMBER 23: (AFP-OUT) Former U.S. President Bill Clinton speaks during the closing plenary session of the annual Clinton Global Initiative (CGI) on September 23, 2010 in New York City. President Obama was speaking to introduce First Lady Michelle Obama. The sixth annual meeting of the CGI gathers prominent individuals in politics, business, science, academics, religion and entertainment to discuss global issues such as climate change and the reconstruction of Haiti. The event, founded by Clinton after he left office, is held the same week as the General Assembly at the United Nations, when most world leaders are in New York City. (Photo by Michael Reynolds-Pool/Getty Images)
In a letter sent to supporters over the weekend, those who donate have the chance to meet them before Tuesday's rally at the Chicago Cultural Center.
The Emanuel campaign is asking for 500 donors "to make sure our field team and volunteers have the resources needed."
Emanuel worked in the Clinton White House for five years.