Alyansa

"Our problem is, we know the one independent most likely is (broadcaster) Ben Tulfo.

- Janvic Mateo, Evelyn Macairan, Elijah Felice Rosales

also likely to win. But the other toss-up, we don't know if it's (television host) Willie Revillame or (former senator) Bam Aquino. That spot is contested by those two names," Rye said.

Determining which bets will occupy the 10th to 12th spot for a Senate seat remains difficult, he noted.

Sen. Bong Go and ACT-CIS party-list Rep. Erwin Tulfo are leading the senatorial race, according to OCTA Research's April 20 to 24 final pre-election survey released yesterday.

Go received the support of 56.8 percent of respondents, while Tulfo obtained 52.7 percent.

Former Senate president Vicente Sotto III (42.3 percent), Sen. Ronald dela Rosa (40.8 percent), Ben Tulfo (40.2 percent), Sen. Pia Cayetano (39.1 percent), Sen. Ramon Revilla Jr. (38.1 percent), Makati Mayor Abby Binay (37.6 percent), Sen. Lito Lapid (35.6 percent), former senator Panfilo Lacson (34.3 percent) and Las Piñas Rep. Camille Villar (31.9 percent) followed.

Aquino (31.4 percent) and Revillame (30.4 percent) ranked ninth to 18th and ninth to 20th, respectively.