In recent months, Boykin has been an outspoken critic of the controversial beverage tax. He has led rallies calling for the repeal of the tax and has told reporters "Preckwinkle must go," so his decision not to run has surprised many.
Boykin also announced his political intentions before the Oct. 10 vote on a possible repeal of the tax, with a chance of a second vote on October 11th, depending on the first vote's outcome.
Political strategists believe Boykin, who once worked for Congressman Danny Davis, may be waiting to consider that Congressional seat when Davis chooses to retire.
Davis plans to run for re-election.