Obama and Biden Go After Donations, McCain in Web Video

The newly minted Democratic ticket appears in a fundraising video introducing Biden, previewing the convention and attacking McCain. Watch video above.

Obama largely stays positive while Biden hits McCain hard, linking him to Bush.

Obama: "Our campaign is literally just beginning.... We'll be in a race to the finish like nothing we've seen before."

Biden: "Right now we're under attack. The McCain campaign has committed to a low road strategy."