SPRINGFIELD — Illinois lawmakers are debating whether the state should join a growing list of jurisdictions in the United States that allow voters to pick more than one candidate for an office, ranking them in order of preference rather than choosing just one.Ranked choice voting, or as it’s sometimes called, “instant runoff voting,” actually has a long history in U.S. elections at the municipal level. But it has become more widely adopted in modern times, including in several states and dozens of …