Alexander "Alexi" Giannoulias ( or ) (born March 16, 1976) is an American politician who served as Illinois Treasurer from 2007 to 2011. A Democrat, Giannoulias defeated Republican candidate State Senator Christine Radogno in November 2006 with 54 percent of the vote, becoming the first Democrat to hold the office in 12 years and, at the age of 30, the youngest State Treasurer in the nation.