As GOP candidates took part in the second presidential primary debate in New Hampshire, a key early primary state, Obama swept through Miami and Puerto Rico Monday, looking to solidify Florida -- one of the essential states in the 2012 general election.

Before heading to Miami for a fundraiser, Obama began Monday in North Carolina, a normally red state that he barely won in 2008.

Puerto Rico was the next stop, as Obama became the first sitting U.S. president to visit the island in 50 years. He last visited the U.S. territory as a candidate in 2008. Back then he was looking for delegates in a close primary race with Hillary Clinton, but now Obama may have his eye less on Puerto Rico and more on Florida, where many of the island residents’ compatriots have flocked.

Florida now holds 29 electoral votes, up by two from the previous presidential election, thanks largely to a jump in the state’s Hispanic population. That jump was driven partly by an increase in native Puerto Rican residents in Central Florida.

According to the 2010 U.S Census, Florida’s Hispanic or Latino population grew from 16.8 percent in 2000 to 22.5 percent in 2010. Of the 2.8 million new Florida residents added over the last decade, more than 1.5 million -- 57 percent -- are Hispanic. Florida is also home to 8.4 percent of the nation’s Hispanic population, the third-largest Hispanic population behind California and Texas.

A look inside the numbers reveals a potential problem for any 2012 Republican presidential candidate with hopes of winning Florida.

The state’s population of residents of Cuban descent -- most of whom reside in South Florida and traditionally support the GOP -- stands at 1.2 million and is still the largest of any Latin residents in the country. But those with Puerto Rican heritage -- who leaned Democratic in the 2008 election and primarily live in Central Florida, where the all-important Interstate 4 corridor lies -- are gaining ground, with 847,500 citizens in Florida.

Those changes, however, belie Obama’s weakness on an issue that has traditionally been of primary importance to presidential campaigns, and is likely to be this year more than any other: the economy. The May unemployment rate is 9.1 percent. Should Obama win re-election without a significant drop in unemployment, he would be the first president to win another term of office with a national jobless rate of more than 7.2 percent since President Franklin Delano Roosevelt.

While Democrats are hoping Florida Gov. Rick Scott's low poll numbers -- he has a 29 percent approval rating and is one of the least popular governors in the U.S. -- will help Obama in 2012, Florida Republicans are pointing out the discrepancy between Obama's record and Scott's on jobs. The national unemployment rate of 9.1 percent is lower than the state jobless rate of 10.1 percent, but has ticked up in recent months, while the state rate is headed in the opposite direction, down nearly 1 percentage point since Scott has been in office.

"President Obama should spend a little less time focusing on keeping his job and a little more time creating jobs for the rest of the country. The fact that he is in our state just to raise money for his campaign is a slap in the face to every Floridian who needs to get back to work. While Governor Scott is making the tough decisions and recruiting businesses to Florida, Barack Obama and Representative Wasserman Schultz continue to try to spin the fact that the president has failed to turn the economy around," said Republican Party of Florida Chairman Dave Bitner.