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(CNN) - For the first time, a majority of Puerto Ricans voted in favor of statehood.

The Election Day vote was nonbinding but marks a shift in attitudes.

Puerto Ricans first voted on their desire to reject their current status as a U.S. commonwealth, and that passed 54 to 46 percent. In a separate question, 61 percent supported statehood, 33 percent backed a new semi-autonomous "sovereign free association," and six percent voted for outright independence.

Critics say the results may have been skewed because not all of the options for Puerto Rico's political status were listed in the questions.

Right now, the roughly four million residents of the Puerto Rico are American citizens who cannot vote for president.