She's Already Toast - Might As Well Make It Official:

Sen. Hillary Clinton will hold an event with supporters by Friday, likely ending her historic bid for the White House and ceding the Democratic nomination to Barack Obama, ABC News has learned.

Clinton's decision to leave the race ends a long, often bitter battle for the right to challenge Sen. John McCain, R-Ariz., in the general election.

Obama, D-Ill., who claimed victory after clinching the necessary delegates on Tuesday, will be the nation's first African American running with the nomination of one of the country's two major political parties.

For those of you hoping she'd march on until the convention, don't fret. Hillary will find a way to interject herself into the mix. But for now, she's out. Obama wins. Game. Set. Match.