The campaign trail is known for being rough. Candidates travel to dozens of cities for multiple events a day, but 2020 presidential hopeful Andrew Yang is working on a way to make things easier.Yang, a 44-year-old Democrat, is testing out hologram technology that would allow him to campaign at different places at the same time.He discussed the plans with TMZ, telling the celebrity tabloid that he hopes to use it while campaigning in Iowa and New Hampshire, the first two states to cast ballots…

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