[cnn-photo-caption image= http://i.l.cnn.net/cnn/2008/POLITICS/05/30/puerto.rico.preview/art.clintonpr.ap.jpg caption="Sen. Clinton speaks at a Cuban social club, in Carolina, Puerto Rico, May 25."] SAN JUAN, Puerto Rico (CNN) - Sen. Hillary Clinton is spending her second straight weekend campaigning in Puerto Rico before the island territory's June 1 primary. It could be one of her last chances to boost her popular vote total.
For Clinton, it's a family affair - with both husband Bill and daughter Chelsea making the rounds.
"Chelsea and I and Hillary have now been to 42 of Puerto Rico's municipalities campaigning for the votes of the people of Puerto Rico," Bill Clinton said Thursday.
"She represents more Puerto Ricans than anyone in the world except someone who is elected here. Send the message back to the mainland on Sunday that Puerto Rico deserves to be considered and its potential is unlimited if only you had a genuine partner in the White House," he added.
She's counting on a strong showing on Sunday. With 55 delegates up for grabs Tuesday, it's the last big prize before the primaries end.