US presidential contenders Hillary Clinton and Barack Obama have spent a final day of campaigning ahead of the Democratic primary in Pennsylvania.
The state is a crucial test in what has become an increasingly bitter battle for the Democratic nomination. While Mrs. Clinton is expected to win, analysts say she needs a convincing victory to keep her campaign alive.
The last-minute campaigning has been marked by a row about Mrs. Clinton’s latest campaign advert. There are four million registered Democrats in Pennsylvania, the last of the big states to hold a primary. Although Mrs. Clinton is behind in the delegate count and in the total votes cast, she has won all the other big state contests.
Let’s see, will they decide after this to united and fight the common enemy instead of each other?