His large margins of victory in Tuesday's contests put Clinton on the ropes.
As Obama gains, he whittles Clinton's lead among baby-boomer women.
The idea that party insiders would decide contest strikes many as 'undemocratic.'
The State Department said Tuesday that Castro's departure won't lead to a change in policy or the lifting of the embargo.
Clinton needs a Dairy State win to prevent him from winning nine primaries in a row.
A party divided over his candidacy will make a victory in the general election difficult, especially if McCain faces Obama.
Ryan Reynolds and Abigail Breslin star in a new romantic comedy, which unwinds like a somewhat improbable Hollywood fairy tale.
Both leading Democrat and Republican candidates vie to show they can tackle global warming.
They've been a key part of her base, but Obama may have closed the gender gap.