Originally posted on 11/21.  Updated and bumped up on 11/24 to incorporate municipal results.

A Progress Illinois analysis of the 2008 general election results found that every county in the state -- along with voters in six of the eight cities with their own election authorities -- leaned heavily against the proposed 2010 constitutional convention. 

The exceptions were East St. Louis (where 60 percent of those voting on the Con-Con question supported the idea) and Chicago (where 43 percent voted in favor).  In both of those areas, however, an inordinately high number of voters ignored the question.

This isn't a huge surprise, considering that the referendum was defeated by over a 30 percent margin at the statewide level. Nonetheless, the lack of variance is pretty striking.

As we were collecting the data, I wondered if we'd end up finding one idiosyncratic little county that bucked the trend.  But no dice.  In fact, only a single county -- Alexander, located at the southern tip of the state -- saw more than 40 percent vote in favor of Con-Con (42.6 percent to be exact).  I'd also wondered if the analysis might yield some geographic differentiation, but there don't seem to be any discernable patterns there either.

Take a look at the map below -- created in conjunction with Paul Smith of EveryBlock -- and judge for yourself:

Click the image to go to the interactive version, which allows you to scroll over the map and view the individual results.  You can also peruse the county-by-county vote tallies below (keep in mind that not all of the results have been certified).  It's worth noting that over one million Illinois voters -- about 18 percent of this year's electorate -- chose not to cast a ballot one way or another on the Con-Con question: