#BBCElectionTrain: Where the oil industry and climate change meet
21 September 2016 Last updated at 03:17 BST
Our team that’s been travelling across the northern US hearing from voters is now at the halfway stage - crossing the states of North Dakota and Montana.
There, our North America correspondent, Aleem Maqbool has been looking at the thorny issues surrounding the oil industry and climate change, in a place that’s directly affected by both.
You can find out more about the trip at www.bbc.com/US2016live.