“Evidence unrelated to the case has been included in the process, such as matters related to President Dilma (Rousseff)’s previous term,” Cardozo said in the filing.

He called the impeachment drive “a truly Kafkaesque process in which the accused is unable to know precisely what she is accused of or why.”

Rousseff, who has vowed to go down fighting, also tried another tack by repeating an offer to forge a political compromise with opponents if deputies throw out impeachment on Sunday.

“The government will fight until the last minute of the second half… to foil this coup attempt,” she said in an interview published by various media outlets Thursday.

Rousseff on Thursday held a meeting with ministers and some of the lawmakers still loyal to her, a presidential source said, shortly before Cardozo announced his appeal.

Several of the parties in Rousseff’s coalition have jumped ship, starting with the PMDB of her vice president, Michel Temer. Scores of lawmakers have since turned against Rousseff, saying they will vote for impeachment.

The number of lawmakers who will vote against her on Sunday reached 342, Estadao daily estimated in the latest count on its website. Folha daily had the number at 338.

If the Senate, in turn, votes to open an impeachment trial, Rousseff would be suspended from office for six months. Temer would step into her place while the impeachment process runs its course and he’d remain in office if she were ousted.

Rousseff has branded Temer a traitor. She says he is the leader of a “coup” against her along with the speaker of the lower house, Eduardo Cunha.

Lawmakers who have yet to declare their position were facing fierce lobbying, including from Rousseff’s top ally and predecessor as president, Luiz Inacio Lula da Silva.

But he, too, faces pressure: the courts have suspended his appointment as Rousseff’s chief of staff over a corruption case against him, linked to a huge graft scandal at state oil company Petrobras.