The debate over what type of new voting machines South Carolina should purchase may be vexing lawmakers in the Statehouse, but many county election officials have reached one consensus: the state needs new polling equipment and soon. The 15-year-old computers that roughly 3.1 million registered voters currently use are costing tens of thousands of dollars to maintain, a burden that falls onto the state’s 46 counties. And at least a few local election directors worry the aging equipment could result in longer lines at polling places if the Legislature doesn’t find the money for a new statewide system this year. Parts for the current computerized voting system somtimes have to be recycled from other machines, they pointed out. And even if a few machines go down, it could take longer for South Carolinians to cast their votes at precincts, especially in a presidential election year like 2020.