On today’s show:

• Peru’s election agency says it has processed about 99.5 percent of the ballots from last weekend’s vote and the frontrunners are still locked in a neck and neck battle. We talk about the tight race, which will likely to be decided by absentee ballot counts.
• We meet a group of Chicagoans working to restore the ecosystem of the Chicago River.
• We talk to the president of the anti-sex trafficking organization Selah Freedom, about their new Chicago operations.