Biden sought his party's presidential nomination this year but dropped out after the Iowa caucuses Jan. 3. He also ran for president in 1988 but withdrew after he was accused of plagiarizing a speech by British Labour Party leader Neil Kinnock.
Obama has made his opposition to the war in Iraq a central part of his campaign, but Biden voted in October 2002 for the final resolution authorizing military action.
This may not sit well with the extreme anti - america left wingers who have hijacked the Democratic Party, or with African Americans who recall this statement he made last year while seeking his party's nomination for the presidency:
Biden said Obama was "not yet ready" to be president, and described Obama as:"the first mainstream African-American who is articulate and bright and clean and a nice looking guy."
He was forced to apologize for the statement which drew accusations of racial insensitivity.
Biden has a history of making statements that required him to apologize.
While campaigning in New Hampshire, Biden remarked to an Indian American supporter,
"you cannot go to a 7-Eleven or a Dunkin' Donuts unless you have a slight Indian accent."
And get this folks:
Biden is up for re-election to the Senate this year and, according to Delaware election law, he can remain on the ballot and run for both seats. If he wins both seats, he can take the Senate oath and then resign. Then, Gov. Ruth Ann Minner, a Democrat, could appoint his replacement who would serve until 2010.
John McCain has already released a television ad responding to Obama's VP pick.
The ad highlights the fact that Senator Biden questioned Obama's lack of experience and said he would be, quote, "honored" to run with John McCain before he was selected as Obama's running mate.