Alexi Giannoulias (IPA-en??l?ksi d???nu?li.?spron; born March 16, 1976) is the Illinois State Treasurer (Illinois Treasurer). A Democrat (Democratic Party (United States)), Giannoulias defeated Republican (Republican Party (United States)) candidate State Senator (Illinois Senate) 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.

On July 26, 2009, Giannoulias announced his candidacy in the 2010 election (United States Senate elections in Illinois, 2010) for the seat in the United States Senate currently held by Roland Burris. Burris, who was appointed by Governor (Governor of Illinois) Rod Blagojevich to fill the seat vacated by Barack Obama following his election (United States presidential election, 2008) as President of the United States, has chosen not to seek election. Giannoulias won the Democratic primary on February 2, 2010, and will face Republican (Republican Party (United States)) Mark Kirk in the general election in November 2010.