Washington - About 75 percent of Americans have favored the normalization of relations between the United States and Cuba, and 73 percent have supported an end to the economic blockade on the island, according to a Pew Research Center polling.

The figures has increased as to the results of a similar study conducted in 2015, despite recent threats by President-elect, Donald Trump, to revoke Obama's executive decisions about Cuba and to reconsider the process of normalization of bilateral relations undertaken in December 2014.

The polling, conducted from December 1 to 5, shows that party differences- between Democrats and Republicans- are persisting in the views of the U.S. policy toward Cuba.

Democrats are more likely than Republicans to support diplomatic ties and an end to the economic, trade and financial blockade the United States has imposed on the Caribbean island since 1962.

Despite those differences, about 62 percent of Republican and independent Republicans have approved the restoration of the diplomatic relations with Cuba, while 62 percent want to repeal the trade blockade.

Democrats have supported these two policies with 87 and 84 percent, respectively.

The greater number of Americans who support the restoration of diplomatic relations and the end of the blockade on Cuba has been among adults under age 50.