Peoria County Board elections 2008 Tags: Election.The Peoria County Board Election of 2008 determined along with 9 members not up for re-election the membership of the Peoria County Board. The Democratic Party retained its majority despite losing the popular vote. Most seats were not contested. country Peoria County Illinois start date 2006-11-04 title Peoria County Board elections 2008 Learn more... Loading...