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Jeremiah Fortson is a Donald Trump canvasser with a pile of registration forms, a steely glint in his eye and a fervent belief that the next president should be a Republican.

Each day he's handed a list of houses to visit, all marked out on a smart phone app, and he spends hours knocking, waiting, sometimes disappointed by a firmly closed door, sometimes snatching the chance for a conversation - or a conversion - with a would-be supporter.

Drive's Anna Foster went to meet him at his home in South Tampa, Florida – a key swing state in the upcoming election.

This clip is part of Â鶹ԼÅÄ Radio 5 live's coverage of the 2016 US Presidential Elections.