Keene’s Aria DiMezzo is the first transgender person to win the GOP’s nomination for Cheshire County sheriff after running unopposed in Tuesday’s primary. DiMezzo, associated with the Free Keene movement of libertarian activists, said Friday she is looking forward to debating incumbent Sheriff Eli Rivera, the popular Democrat who is running for his fifth term. “I’m hoping he will debate me; that would be the highlight of this,” she said. DiMezzo first ran in 2018 as a libertarian against Rivera and longtime Republican candidate Earl Nelson, though she ran under her previous male name because she did not have her name legally changed in time for the 2018 ballot. Nelson didn’t run this year and DiMezzo seized the opportunity to run unopposed as a Republican. DiMezzo said she would like to run as a libertarian but that’s not a realistic option in the current political environment.