Through a FOIA request to the Idaho Racing Commission, I have confirmed the following kill there in 2018. Please note, however, that Idaho’s last remaining active racetrack, Les Bois Park, closed in 2016. What’s left are state and county fairs, which had a combined 27 days of racing in 2018. Having said that, based on experience (the data elsewhere on this site) and the difficulty I encountered even getting a response, I’m fairly confident that I have not captured all of Idaho’s killing with this request.
Kingofdarkness, May 20, Pocatello R – no details forwarded