Nationwide demonstrations calling for the impeachment of President Dilma Rousseff swept Brazil for the second day in less than a month, though turnout at Sunday’s protests appeared down, prompting questions about the future of the movement.

A poll published over the weekend suggested the majority of Brazilians support opening impeachment proceedings against Rousseff, whose second term in office has been buffeted by a corruption scandal at Brazil’s largest company, oil giant Petrobras, as well as a stalled economy, a sliding currency and political infighting. Only 13 percent of survey respondents evaluated Rousseff’s administration positively.