MoveOn.org has asked its members if they'd like to participate in an online vote between the two remaining Democratic candidates, Hillary Clinton and Barack Obama. Having never officially thrown its weight behind a presidential aspirant, the grassroots political powerhouse has the potential to significantly stir up the pre-Super-Tuesday polls; about half of MoveOn's 3.2 million activists are residents of Super Tuesday states, including 575,000 from California alone. If MoveOn decides to go ahead with the vote, virtual polling will take place overnight, slating the possible announcement for as early as tomorrow.