Barack Obama has won the Democratic presidential caucuses in Guam by just seven votes, while a new poll paints an ominous picture for his campaign.
With all districts reporting, Obama won 2,264 votes, while Hillary Clinton got 2,257.
Because Democrats in the U.S. territory prefer a proportional voting system, the two candidates will split the four pledged delegate votes.
Guam also has five super delegates.
Neither Clinton or Obama personally campaigned in Guam, but both did local media interviews and advertisements.
Before Saturday's vote, The Associated Press had Obama leading Clinton 1,488 to 1,336 in pledged delegates.
Clinton had a slight lead in superdelegates, 269 to 248, but Obama has been slowly cutting her lead there. 2,025 in total are needed to win.
Statistically, it is overwhelmingly unlikely for Clinton to take the lead over Obama in pledged delegates. But a new poll says that Obama's difficulty in winning over working-class whites is not going away -- in fact, its getting worse.
In an Associated Press-Yahoo News poll conducted in April, 53 per cent of whites who have not completed college viewed Obama unfavorably, up a dozen percentage points since November.
The poll, which was taken before the Pennsylvania primary, showed an overwhelming preference for Clinton over Obama for working-class whites. They favored Hillary Clinton by 39 percentage points, compared to Obama's 10-point lead with white college graduates.
The poll suggested that Obama's problem with working-class whites can be attributed to who makes up that demographic. Besides being less wealthy than college graduates, they tend to be older - two markets that Clinton has done well in.
The fact that Obama is trying to become the first African-American U.S. president cannot be left out -- exit polls in Pennsylvania showed that one in five working-class whites thought race was a important factor and eight out of 10 of those voters voted for Clinton.
Analysts also point to Obama's links to his former pastor, the controversial Rev. Jeremiah Wright, and Obama's "bitter" comments as reasons for his failure to gain traction with the working class.
Additionally, some analysts have said that Obama needs to focus more on economic issues to win over working-class whites.
With files from The Associated Press
