Pennsylvania Gov. Ed Rendell endorses the candidacy of Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., Wednesday at a news conference at Philadelphia City Hall. Rendell, the former chairman of the Democratic National Committee, said he is looking forward to campaigning for Clinton in the neighboring states ofNew Jersey and Delaware, which hold primaries on "mega Tuesday" Feb. 5. Pennsylvania doesn't hold its primary until April 22.