Voters were not given the option of rejecting the plan, and opposition parties boycotted the vote.
On Sunday, local news media reported that explosions were heard at the Paramacay military base in Carabobo, an apparent attack by dissident security forces.
Diosdado Cabello, a powerful member of the ruling socialist party, said the base was “totally under control” and added that “various terrorists have been detained.”
It was not the first time this summer that the government had faced rebellious officers. On June 27, a rogue faction of the Venezuelan police attacked the country’s Supreme Court and the Interior Ministry. The group released a video where an officer named Oscar Pérez urged Venezuelans to “fight for their legitimate rights.”
The video on Sunday used a similar format, a single spokesman standing in front of a group of silent men. Captain Caguaripano said his men were not looking to stage a military coup, but rather a “civic and military action to re-establish constitutional order,” which would seek a “transitional government and free general elections.”
“The time has passed for secret pacts and deals between tyrants and traitors,” Captain Caguaripano said.
He urged security forces to “display banners alluding to 350,” an apparent reference to Article 350 of the Venezuelan Constitution, which encourages people to “disown any regime, legislation or authority that runs counter to democratic principles.” It may have been a reference to Mr. Perez’s attack, where he flew a banner marked “350” from his helicopter
It was unclear what the public reaction would be to attack. Videos on social media showed small crowds gathered in Carabobo waving Venezuelan flags and banging pots and pans in a sign of support for the rebel security forces.
The idea of military intervention to solve the Venezuelan political crisis has been floated nationally. On July 16, opposition parties held a protest vote against the Constituent Assembly, two weeks before Mr. Maduro’s planned election, an unofficial poll they said drew more than seven million people.
Among the three questions was a vaguely worded one asking whether Venezuela’s military should “defend” the current Constitution and “back the decisions” of the National Assembly, what some interpreted as taking the temperature for support for military intervention.
The survey passed by a wide margin.