The Allegheny County Board of Elections committee in charge of searching for a new voting system decided Friday to spend the next month working with vendors to test prospective systems, seeking confirmation that they can handle the high volume of complex contests in the county. A report submitted Aug. 19 by the Voting System Search Committee and discussed Friday indicates that only one of four vendors under consideration has the state and federal certification guaranteeing it can meet the county’s needs. The committee is comprised of officials from the county elections, law, purchasing, computer services, budget and finance, human resources, county manager and administrative services departments. “I was surprised too,” said board chair and Allegheny County Councilman Thomas Baker, R-Ross. “I thought we would have a couple options that were viable that we would be able to pick from. I’m learning at the same pace that you’re all learning. I had no sense, as chairman, what would be in the report.” The voting system’s software must be robust enough to handle up to 4,000 separate ballot styles during a municipal primary election, according to the report. That means a system must be able to support an election involving as many as 10,000 candidate positions and 7,000 contests across the county’s 130 municipalities and 43 school districts.