Exclusive: Trump ground game in key states flagged as potentially fake

Data suggests canvassers linked to Elon Musk's America Pac falsely claimed to have visited homes of potential voters

Donald Trump's campaign may be failing to reach thousands of voters they hope to turn out in Arizona and Nevada, with roughly a quarter of door-knocks done by America Pac flagged by its canvassing app as potentially fraudulent, according to leaked data and people familiar with the matter.

The potentially fake door-knocks - when canvassers falsely claim to have visited a home - could present a serious setback for Trump as he and Kamala Harris remain even in the polls with fewer than 20 days until an election.