Last week, the County Board unanimously passed new district lines based on the 2010 census numbers. You can see a summary of the new lines and a map here.
Based on the changes, five of the seven seats on the Board will be up for election in November 2012: Districts 1, 2, 5, 6 and 7. Those are the seats currently held by Mike Opat, Mark Stenglein, Randy Johnson, Jan Calison and me. Stenglein recently announced that he will not be running for re-election in District 2, so that will be an open-seat race.
Cross-posted at Hennepin County Taxpayer Watchdog