Thousands of protesters took to the streets in Venezuela and other Latin American countries after the official vote was contested.
The government said more than 2,000 people had been detained, some of whom were charged with “terrorism.”
Some opposition figures have also been detained in recent weeks.
Maria Oropesa, campaign coordinator for the opposition coalition Vente Venezuela, live-streamed the detentions on Instagram.
In one video, as she tells her followers that she did nothing wrong, a loud thumping noise can be heard in the background. Then, officers from the Venezuelan military's counterintelligence agency knock on her door and the video goes black.
Security forces arrested Freddy Superano and Roland Carreño, who worked for the opposition Popular Will party, and Ricardo Estevez, who was a technical adviser to the opposition movement along with Ms. Oropesa.
Last week, Mr. Gonzalez refused to appear before the nation's Supreme Court, which has subpoenaed all presidential candidates to audit the disputed vote.
He later said attending would put his freedom and the “will of the Venezuelan people” at risk.
Venezuela's Supreme Court, which the opposition sees as aligned with President Maduro, said Saturday it was continuing to evaluate the election and that its ruling would be “final and binding.”
