Maduro has repeatedly excoriated Trump for sanctions against Venezuela, which range from restrictions on U.S. banks buying newly issued debt to barring American citizens from having any dealings with specific individuals in his government.
At least 125 people have been killed in four months of protests against President Nicolás Maduro's government, which has resisted calls to bring forward the presidential election and instead set up a pro-Maduro legislative superbody called a Constituent Assembly that has overruled the country's opposition-led Congress.
Varela said the situation in Venezuela had deteriorated since the government decided to press ahead with a 545-member constituent assembly in the face of strong criticism from around the Americas, including the United States and Mexico.
President Nicolas Maduro claimed a popular mandate to dramatically recast Venezuela's political system, dismissing US sanctions imposed on him and condemnations by his domestic opponents and governments around the world.
Luis Vicente Leon, president of Datanalsis, said that because the government has access to data showing who does and does not vote, many people are likely to feel obligated to participate or risk losing their jobs in a country with severe food shortages and triple-digit inflation.
He spoke at a ceremony marking the anniversary of a failed barracks uprising that is considered the beginning of Fidel Castro's revolution. Venezuelan opposition leaders have called a two-day general strike beginning to protest Maduro's plans to rewrite the country's constitution.
Venezuela's majority backed opposition is demanding Maduro abandon a Sunday election to create a controversial congress with powers to rewrite the country's constitution and override all other institutions. Foes have said that would institutionalize dictatorship by the ruling Socialist Party.