
Vice President Joseph R. Biden addresses cadets during commencement for the United States Coast Guard Academy in New London, Conn., Wednesday, May 22, 2013. (AP Photo/Jessica Hill)

Vice President Joseph R. Biden addresses cadets during commencement for the United States Coast Guard Academy in New London, Conn., Wednesday, May 22, 2013. (AP Photo/Jessica Hill)

According to the likely 2016 presidential matchups in a Public Policy Polling survey released Wednesday, Hillary Rodham Clinton leads among Democrats with 63 percent of the votes, well ahead of Vice President Joseph R. Biden at 13 percent and a couple of other Democrats in single digits.

According to the likely 2016 presidential matchups in a Public Policy Polling survey released Wednesday, Hillary Rodham Clinton leads among Democrats with 63 percent of the votes, well ahead of Vice President Joseph R. Biden at 13 percent and a couple of other Democrats in single digits.

**FILE** Vice President Joseph R. Biden delivers remarks at the 43rd annual Washington Conference on the Americas at the State Department in Washington on May 8, 2013. (Associated Press)

**FILE** Vice President Joseph R. Biden delivers remarks at the 43rd annual Washington Conference on the Americas at the State Department in Washington on May 8, 2013. (Associated Press)

Vice President Joseph R. Biden speaks at Wednesday's memorial service for fallen MIT Officer Sean Collier, fatally shot during the manhunt for the Boston Marathon bombers. With bagpipes wailing, the line of mourners stretched for a half-mile.

** FILE ** Vice President Joseph R. Biden speaks with House Democratic Leader Nancy Pelosi, D-Calif., during the dedication of a room in the Capitol Visitors Center to slain congressional staffer Gabriel Zimmerman on Capitol Hill, in Washington, Tuesday, April 16, 2013. Zimmerman died two years ago in the Tucson, Ariz., attack that critically wounded Giffords and took six lives. (AP Photo/Jose Luis Magana)

Vice President Joseph R. Biden speaks about gun legislation on April 9, 2013, in the Eisenhower Executive Office Building at the White House in Washington. The Obama administration continued its efforts to pressure Republicans, with Biden and Attorney General Eric Holder speaking at the White House, joined by law enforcement officials. (Associated Press)