Apparently Joravsky thinks he is a genius and could run the city of Chicago better than Mayor Daley and the Democratic Party. It's easy to be a critic. If he believes he has a better way to run this city, then it shouldn't be too difficult for him to get campaign funds and run for office. Or, he could move to a suburb.
The last Republican to be mayor of Chicago was William Hale Thompson. His second term ended in 1931 during the Depression. Republicans haven't been invited back since. This alone proves the voters aren't fools, particularly In light of the second bailout of financial institutions under a Republican president during the past 20 years.