The Senate could form a decisive majority tomorrow, which will install Sen. Sherwin Gatchalian as Senate president, as at least three senators are being courted to jump ship from Sen. Alan Peter Cayetano’s faction, Blue Ribbon committee chair Sen. Erwin Tulfo revealed yesterday.

Acting Senate President Sherwin Gatchalian’s bloc may have already secured the 13th vote necessary to officially cement its control over the chamber, Sen. JV Ejercito said yesterday.