Over three days, some of the wealthiest people in Chicago, if not the nation, dumped more than $1.3 million into the political re-election campaign of Chicago Mayor Rahm Emanuel.. Among the donors was Citadel founder and billionaire Ken Griffin, who donated $250,000 to Emanuel. The mayor is battling to keep his seat against a surging Cook County Commissioner Jesus “Chuy” Garcia. Others who donated from March 3 to March 6 include: Groupon co-founder Eric Lefkofsky, $200,000; Richard Melman, $100,000; and Jay B. Pritzker and M.K. Pritzker, who tossed in $50,000 each. Garcia recently took in a a $250,000 contribution from...