Article Photos: White House and control of Congress on the ballot

President Barack Obama waves as he exits the Marine One helicopter on the South Lawn of the White House in Washington, Friday, Nov. 2, 2012, after days of campaigning. (AP Photo/Jacquelyn Martin)

President Barack Obama waves as he exits the Marine One helicopter on the South Lawn of the White House in Washington, Friday, Nov. 2, 2012, after days of campaigning. (AP Photo/Jacquelyn Martin)