The Associated Press file photo
Sen. Joe Biden, D-Del., left, talks with Sen. Barack Obama, D-Ill., prior to the start of the first Democratic presidential primary debate of the 2008 election hosted by the South Carolina State University in Orangeburg, SC., in this April 26, 2007, file photo. Barack Obama selected Sen. Joe Biden of Delaware late Friday night Aug. 22, 2008, to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign and defense issues.
The Herald-Dispatch
The text message announcing the choice of Sen. Joe Biden of Delaware as the vice presidential selection for the Democratic party is seen on a communication device, Saturday, Aug. 23, 2008, in Greenville, Del., after it arrived at 3:09 AM. Obama announced the pick on his Web site with a photo of the two men and an appeal for donations. A text message went out shortly afterward that said, "Barack has chosen Senator Joe Biden to be our VP nominee." (AP Photo/Haraz N. Ghanbari)
The Herald-Dispatch
*** FILE *** Democratic presidential hopefuls Sen. Barack Obama, D-Ill., left, laughs with Sen. Joseph Biden, D-Del., before the start of a presidential forum hosted by the AFL-CIO at Soldier Field in Chicago, in this Tuesday, Aug. 7, 2007 file photo. Sen. Joe Biden of Delaware is Barack Obama's pick as vice presidential running mate, The Associated Press has learned Saturday Aug. 23, 2008. (AP Photo/Charles Rex Arbogast, FILE)
The Herald-Dispatch
*** FILE *** Senate Foreign Relations Committee Chairman Sen. Joseph Biden, D-Del., left, talks with committee member, and Democratic presidential hopeful Sen. Barack Obama, D-Ill., on Capitol Hill in Washington, in this Tuesday, April 8, 2008 file photo. Sen. Joe Biden of Delaware is Barack Obama's pick as vice presidential running mate, The Associated Press has learned Saturday Aug. 23, 2008. (AP Photo/Pablo Martinez Monsivais, FILE)
The Herald-Dispatch
** FILE **In this Dec. 22, 1972, file photo, Sen. Joe Biden, D-Del. kisses the cheek of an unidentified friend who offered consoling words after a memorial service in Wilmington, Del., for Biden's wife Neilia, and their 13-month-old daughter Naomi Christina, who perished in a car-truck crash. Barack Obama told everyone he wanted a running mate who will challenge his thinking, and now he's got one. Joe Biden's tendency to speak his own mind _ and speak and speak _ is entwined in his DNA. (AP Photo/Bill Ingraham, File)
The Herald-Dispatch
** FILE **In this April 9, 1993, file photo Sen. Joe Biden, D-Del. stands in front of a Danish armored personnel carrier at the UN-controlled Sarajevo Airport, making a statement about his trip to the besieged Bosnian capital. Barack Obama selected Sen. Joe Biden of Delaware late Friday night Aug. 22, 2008 to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign policy and defense issues. In Washington, Biden, 65, is known as a collegial figure even when he's competitive _ one who can spin flowery praise one moment and biting fulmination the next. (AP Photo/Michael Stravato, File)
The Herald-Dispatch
** FILE **In this Dec. 13, 1972 file photo, the newly-elected Democratic senator from Delaware, Joe Biden, is shown in Washington. Barack Obama selected Sen. Joe Biden of Delaware late Friday night Aug. 22, 2008 to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign policy and defense issues. In Washington, Biden, 65, is known as a collegial figure even when he's competitive _ one who can spin flowery praise one moment and biting fulmination the next. (AP Photo, File)
The Herald-Dispatch
** FILE **In this Jan. 5, 1973, file photo, four-year-old Beau Biden, foreground, watches his dad, Joe Biden, center, being sworn in as the U.S. senator from Delaware, by Senate Secretary Frank Valeo, left, in ceremonies in a Wilmington hospital. Beau was injured in an accident that killed his mother and sister in December. Mrs. Biden's father, Robert Hunter, holds the bible. Barack Obama selected Sen. Joe Biden of Delaware late Friday night Aug. 22, 2008 to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign policy and defense issues. In Washington, Biden, 65, is known as a collegial figure even when he's competitive _ one who can spin flowery praise one moment and biting fulmination the next. (AP Photo, FILE)
The Herald-Dispatch
** FILE **In this Oct. 12, 1991 file photo Senate Judiciary Committee Chairman Joe Biden, D-Del., points angrily at Clarence Thomas during comments at the end of hearings on Thomas' nomination to the Supreme Court on Capitol Hill. Sen. Edward Kennedy, D-Mass. looks on at right. Barack Obama selected Sen. Joe Biden of Delaware late Friday night Aug. 22, 2008 to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign policy and defense issues. In Washington, Biden, 65, is known as a collegial figure even when he's competitive _ one who can spin flowery praise one moment and biting fulmination the next. (AP Photo/Greg Gibson, File)
The Herald-Dispatch
ADDS DATE OF SELECTION *** FILE *** Presidential hopeful, Sen. Joseph Biden, D-Del., speaks with Sen. Barack Obama, D-Ill., at the Sisters on Target banquet in Des Moines, Iowa, in this Saturday, Oct. 13, 2007 file photo. Barack Obama selected Sen. Joe Biden of Delaware late Friday night aUG. 22, 2008 to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign and defense issues. (AP Photo/Kevin Sanders, FILE)
The Herald-Dispatch
*** FILE *** U.S. Sen Joe Biden, D-Del., talks about his foreign policy positions at the World Affairs Council of New Hampshire at Southern New Hampshire University, in Manchester, N.H., in this Sunday, Dec. 17, 2006 file photo. Barack Obama selected Sen. Joe Biden of Delaware late Friday night to be his vice presidential running mate, according to a Democratic official, balancing his ticket with an older congressional veteran well-versed in foreign and defense issues. (AP Photo/Jim Cole, FILE)
The Herald-Dispatch
** FILE** Sen. Joe Biden, D-Del., listens to testimony during a Senate Committee on Foreign Relations hearing on Capitol Hill in Washington in this Sept. 19, 2006 file photo. Sen. Joe Biden of Delaware is Barack Obama's pick as vice presidential running mate, The Associated Press has learned Saturday Aug. 23, 2008. (AP Photo/Charles Dharapak, File)