In a surprise upset, Illinois’ 8th district incumbent Representative, Democrat Melissa Bean, conceded to Tea Party-backed Republican Joe Walsh after losing by less than 300 votes. From the Chicago Sun Times:

By a margin of 291 votes out of more than 200,000 cast, GOP challenger Joe Walsh emerged Tuesday as the winner over U.S. Rep. Melissa Bean in their nail-biting 8th District congressional race.

Bean, a three-term Democrat, made the results official late Tuesday, conceding the contest after calling Walsh to congratulate him on his upset victory.

Bean was a member of the Blue Dog caucus and the New Democrat Coalition. Bean voted in support of President Obama’s health care reform; she was one of only 15 Democrats to support the Central American Free Trade Act (CAFTA), and one of only four Dems to side with Republicans against the James Zadroga 9/11 Health and Compensation Act.

With this contest finally over, there are now only five undecided House races. In two of the races, CA-11 and CA-20, the Democrats currently hold the lead while in the other three, NY-01, NY-25, TX-27, the Republicans are ahead in the vote count.