Supporters of the Peruvian left-wing presidential candidate, Pedro Castillo, protest in front of the National Jury of Elections building in Lima on Wednesday. Photo: AFP

A panel overseeing challenges to Peru's messy presidential election three weeks ago and declaring a winner got back to work Saturday after a pause forced by the departure of one of its members.

Indeed, Peruvians are still waiting for a new president to be proclaimed from the June 6 election.

Leftist Pedro Castillo took a majority of votes, according to the unconfirmed count, in an election his right-wing rival Keiko Fujimori - charged with corruption in an unrelated scandal - claims was riddled with fraud.

The election has not been called due to the fraud claims from the Fujimori camp, which asked the National Jury of Elections (JNE), the final vote arbiter, to review thousands of votes. If she loses, Fujimori risks an imminent graft trial that would otherwise be delayed until after her presidential term.

One of four JNE judges, Luis Arce, announced Wednesday that he "declined" to continue his duties, from which he cannot resign under law until the job at hand is done.

On Saturday Victor Raul Rodriguez was sworn in as Arce's replacement. "Electoral justice cannot remain paralyzed or blocked," said Jorge Luis Salas, the top JNE official, as the new panel got back to working reviewing disputed ballots.

Salas has endured fierce criticism from Fujimori supporters and even demonstrations outside his home.

Thousands of supporters of the two candidates took to the streets Saturday evening in dueling marches. Those who back Fujimori again demanded a new election, while supporters of Castillo called on the JNE to proclaim him the winner once and for all.

The JNE has had to weather a highly polarized political environment that has seen large rallies in favor of Fujimori and Castillo, including two in Lima on Saturday.

The situation was further rocked this week by the airing of audio from Vladimiro Montesions, the nefarious intelligence chief under Fujimori's father Alberto Fujimori (who was president from 1990-2000). Montesions is currently serving time for human rights abuses. In the audio, the imprisoned Montesinos gives instructions to buy three of the four JNE magistrates and throw the election for Fujimori.

According to the full vote count, Castillo received 50.12 percent of the votes in the election, or some 44,000 more than Fujimori.