The battle for the last four of 12 Senate seats contested in the Philippine midterm elections has come down to the wire, with just 6 per cent of votes – about 2.5 million nationwide – still to be counted.Unofficial counts on Tuesday suggested allies of President Rodrigo Duterte were clear winners in seven of the first eight seats, while in the remaining four, Senator Paulo Benigno “Bam” Aquino IV appeared to be the only candidate from the main opposition Liberal Party in with a chance of…