(CNN) - In Puerto Rico, CNN estimates Hillary Clinton won 38 delegates while Barack Obama won 17 - a net gain of 21 pledged delegates for the New York senator.
Obama's overall delegate lead now stands at 155 - 117 in pledged delegates, and 38 in superdelegates.
The Illinois senator is now 48 delegates short of clinching the Democratic nomination while Clinton is 203 delegates short of clinching the nomination.
There are 31 pledged delegates up for grabs in the remaining two contests (Montana and South Dakota on Tuesday night), and 205 superdelegates remain uncommitted.
[cnn-photo-caption image= http://i.l.cnn.net/cnn/2008/POLITICS/06/01/puerto.rico/art.clinton.gi.jpg caption=" Sen. Hillary Clinton greets patrons Sunday at a San Juan, Puerto Rico, bakery."](CNN) - It was a clean sweep for Hillary Clinton in Puerto Rico in every demographic group, even those groups that are usually firmly in Barack Obama's camp.
The Illinois senator usually wins among males, young voters, those who attended college, and those with higher incomes.
But in the Puerto Rico primary, Clinton won 70 percent of the male vote, 65 percent of voters under 30, 70 percent of voters who attended college, and 66 percent of voters with an income of over $50,000.
Clinton also performed strongly among those demographic groups that have long constituted the backbone of her base.
She won 70 percent of female voters, 77 percent of those over 65, 69 percent who did not attend college, and 71 percent of voters with an income of $15,000 or less.
(CNN) - CNN has projected that Hillary Clinton will win big in Puerto Rico. Why did she do so well there?
Two of the key reasons are her strong performance among those voters who favor statehood for Puerto Rico and her husband's popularity on the island.
According to CNN's exit polls, 60 percent of Puerto Ricans who participated in the primary favor statehood, and Clinton won 82 percent of those voters. Neither Clinton or Barack Obama have directly said they favor statehood for the island, but Clinton said earlier this week she thinks Puerto Ricans should be able to vote in the general election.
Bill Clinton's overwhelming popularity in Puerto Rico also gave the New York senator a boost. Just over 80 percent said they had a favorable view of the former president, and those voters went for Clinton by a 56 point margin, 78 percent to 22 percent. (Among the 15 percent who hold an unfavorable opinion of Bill Clinton, 76 percent voted for Obama.)
Clinton wins Sunday's vote by a wide margin, according to exclusive CNN exit polls.
(CNN) - Hillary Clinton appears to be benefiting from her extensive campaigning in Puerto Rico.
The New York Democrat spent 6 of the last 7 days campaigning on the island, while Barack Obama only made one visit to the territory. Among those Puerto Rican voters who decided in the last week, Clinton has a 31 point advantage, 67 percent to 33 percent.
The vast majority of Puerto Rican voters (78 percent) also said the candidates' personal visits to the island - a rarity in previous presidential contests – had a big impact on how they voted.
(CNN) - Bill Clinton is a very popular figure among voters in Puerto Rico's Democratic primary, CNN's exit polls show.
Just over 80 percent give the former president a favorable rating, while only 15 percent hold a negative view of him.
The majority of Puerto Rican voters hold an unfavorable view of his successor, President Bush - but to a much lesser extent than Democrats on the mainland. According to the exit polls, 59 percent say they aren't happy with President Bush, while 39 percent hold a favorable rating.
Among Democrats in the United States, Bush's disapproval rating is above 90 percent. Why is he more popular among Puerto Rican voters? He ended the very unpopular Navy bombing exercises on the Puerto Rican island of Vieques in 2003, after six decades of escalating local opposition.
(CNN) - Puerto Rican voters appear to hold views in line with Democrats on the mainland.
According to CNN's exit polls, voters on the island rank the state of the economy as their top concern, and they overwhelmingly disapprove of the war in Iraq.
Sixty percent say the economy is the top issue, and 82 percent say they disapprove of the war in Iraq. Those numbers are nearly identical to what Democrats on the mainland have said in previous primary contests.
(CNN) - A majority of Puerto Rican voters have strong ties to the U.S. mainland and particularly to New York, according to CNN's exit polls.
Nearly 60 percent said they've lived on the mainland at one time, and 78 percent reported having family members who lived in New York, a fact that clearly advantages Clinton.
[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/06/01/art.exits2.ap.jpg caption="Puerto Rican Dems are divided over statehood. "](CNN) - An issue unique to Puerto Rico appears to be dividing supporters of Hillary Clinton and Barack Obama: whether the current U.S. territory should become a state or not.
Neither candidate has taken a direct position on the issue, though Puerto Rico's former governor, who has advocated statehood, supports Clinton.
According to CNN's exclusive exit polls, Clinton supporters there heavily back statehood for the commonwealth, while Obama's do not. Among Clinton supporters, 72 percent want it to be a U.S. state, 23 percent want it to remain a commonwealth, and 2 percent want it to be an independent country.
But among Obama supporters, 57 percent want Puerto Rico to stay a commonwealth while only 34 percent want it to be a U.S. state. Eight percent want it to be an independent country.
[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2008/images/06/01/art.exits1.ap.jpg caption="Clinton's supporters in Puerto Rico say they won't be happy if Obama wins the nomination."](CNN) - Puerto Rican voters appear to be as divided as Democrats on the mainland, according to CNN's exclusive exit polls.
Among Hillary Clinton's supporters there, 72 percent said they would not be satisfied if Barack Obama wins the Democratic nomination, while only 26 percent said they would be.
Obama's supporters were slightly more willing to support Clinton, but not very. Nearly 60 percent said they would be dissatisfied if the New York Democrat won the nomination, while only 38 percent said they would be satisfied.
Puerto Ricans are not eligible to vote in the general election.