Nearly twenty-five percent of the 1.3 million voters in Chicago will be put in a new ward when voter registration cards are sent out this year.
The remapping happened when City Council redrew ward boundaries, but the official notification to voters hasn't arrived yet in the mail – something that could cause a clash between aldermen trying to gain new supporters and those who say they should stay where they are until the next 2015 election.
Legally and technically, aldermen represent the wards from which they were elected last year, before the remap was approved. In practice, however, it's a different matter. Aldermen typically want to please people in their wards who they would represent if they run again.