Supporters of embattled Brazilian President Dilma Rousseff were to hit the streets in rallies across the country Thursday aimed at pressuring Congress ahead of an impeachment vote.

Pro-government organizations and the leftist Workers’ Party called protests in 31 cities, with the main one in the capital Brasilia, headed by controversial former president Luiz Inacio Lula da Silva.

Lula, who founded the ruling Workers’ Party and remains a heavyweight figure on the left, called for supporters to hit the streets on his Facebook page.

On Wednesday, Rousseff branded the attempt to bring her down as based on trumped-up charges and amounting to “a coup.”

She has been left dangerously isolated after the main coalition partner for her Workers’ Party, the PMDB, announced Tuesday that it was pulling out and would support impeachment.

Rousseff is also dealing with the deepest recession in a generation and fallout from a huge corruption scandal at…