Bill Clinton on the campaign trail (11 images)

Former U.S. President Bill Clinton talks with Rep. Debbie Halvorson (R) at a pre-election rally on October 26, 2010 in Chicago. UPI/Brian Kersey

Florida Democratic Gubernatorial Candidate Alex Sink and former President Bill Clinton (L) wait to take the stage during an Early Vote Rally at Miami-Dade College in Miami, Florida on October 21, 2010. UPI/Martin Fried

Former U.S. President Bill Clinton (L,background) smiles with Maryland Gov. Martin O'Malley as Sen. Barbara Mikulski (D-MD) makes remarks, at Federal Hill Park,in Baltimore, Maryland, October 21, 2010. Clinton has been lending a hand on the campaign trail, as some polls suggest the Democrats may lose majority control of the House in the upcoming midterm elections. UPI/Mike Theiler

Former U.S. President Bill Clinton (R) listens as Democraic Senate candidate Alexi Giannoulias speaks at a pre-election rally for Democrats on October 26, 2010 in Chicago. Giannoulias faces off against Republican candidate Rep. Mark Kirk in Tuesday's election. UPI/Brian Kersey