Tennessee officials say 28 of 95 counties now have voting machines that leave a paper trail, and more counties plan to buy them. On Tuesday, Tennessee Elections Coordinator Mark Goins told state senators that three counties had such equipment in 2010. Goins says 45% of the votes cast last year had a paper trail. Secretary of State Tre Hargett says he’s encouraging counties to buy paper-trail equipment, but can’t require it under current state law. He said some counties have also bought new electronic-only machines in the last few years. Hargett says machines bought with the newest round of federal voting money must have the paper audit trail.