MSNBC:

Democratic Sen. Hillary Rodham Clinton unveiled her intentions to begin a widely anticipated campaign for the White House on Saturday. The former first lady, intent on becoming the first female president, said on her web site message, "I'm in and I'm in to win."

Clinton's announcement, days after Sen. Barack Obama shook up the contest race with his bid to become the first black president, establishes the most diverse political field ever. Read on...

Taking a page out of Obama's book, Clinton announced with a video on her website (courtesy MSNBC).