Analyst: If you trust unofficial presidential tally, why doubt VP results?

Metro Manila (CNN Philippines) — Rodrigo Duterte enjoys a very comfortable lead in the partial and unofficial tally by the Parish Pastoral Council for Responsible Voting (PPCRV) that two of his top rivals believe the results enough to concede to him.

Related: Duterte, Robredo lead in PPCRV partial, unofficial results

Related: Grace Poe concedes to Rodrigo Duterte

Related: Liberal Party bet Roxas concedes to Duterte

The vice presidential race, however, is a different story with the top two contenders in a neck and neck race.

The PPCRV count shows Rep. Leni Robredo ahead of Sen. Ferdinand "Bongbong" Marcos Jr. by only over 200,000 votes as of 5:42 p.m. Wednesday (May 11), her votes growing steadily after overtaking the senator’s nearly 1 million votes just hours after the count began late Monday (May 9).

The Marcos camp then aired their suspicion of poll cheating and questioned how Robredo caught up with his advantage shortly after the beginning of the unofficial count.

Also read: Marcos suspects poll cheating

Also read: Poll watchdogs: Over 500k lead in votes needed for convincing win for nat'l posts

Political analyst Jan Robert Go questions this suspicion.

"If you have one system and you trust the presidential results, its curious why you would not be trusting the vice presidential results," said Go, also a professor at the University of the Philippines (UP) Diliman.

Go said there are also no verified claims of discrepancies between voters' receipts and ballots cast.

"When you put in the ballot, it (vote counting machine) reads the same ballot. The same machine receives the ballot ... And we have not heard of any complaints about the manifest in the receipts," said Go.

"It's curious that they are raising doubts at this point in time because one candidate has gone over the other," he said.

Go also pointed out that candidates never doubt the results of the elections when the count shows that they are leading, but when it's the opposite, they express doubts about the credibility of the electoral system.

"When they feel that they are on the under side of the coin, they feel like there's something wrong that is happening. They try to question every step of the way like the glitch that has happened in PPCRV and the supposed changes in the value of Sen. (Francis) Ecudero's vote," said Go.

However, Go said it would be better for the public to wait for the official canvassing of votes, which is set to begin on May 25, when Congress convenes as the National Board of Canvassers in a joint session.

"It's too early to say who will be the next vice president. The call for vigilance is valid for both camps and, of course, acceptance that — whoever wins the decision — we must accept the decision of the people," Go claimed.