Venezuelan President Nicolas Maduro proposed early parliamentary elections on Saturday, seeking to shore up his crumbling rule after a senior general defected to the opposition and tens of thousands thronged the streets in protest at his government.

As domestic and international pressure on Maduro to step down mounts, a senior air force general disavowed him in a video that circulated earlier on Saturday, expressing his allegiance to parliament head and self-proclaimed interim president Juan Guaido.

The military’s support is crucial for Maduro, who is deeply unpopular, largely due to an unprecedented economic crisis that has prompted an exodus of millions. Maduro claims he is victim of a coup directed by the United States.

In a speech to supporters, Maduro said the powerful government-controlled Constituent Assembly would debate calling early elections for the National Assembly parliament, which is opposition-controlled.

Guaido has called for a new, fair presidential election after the disputed vote won by Maduro last year.

“You want elections? You want early elections? We are going to have parliamentary elections,” Maduro told a pro-government rally in Caracas, held to commemorate the 20th anniversary of late socialist leader Hugo Chavez’s first inauguration as president. The parliamentary elections had been scheduled for 2020.