AdvertisementRepublicans Are Knocking On Doors. Democrats Aren't. Biden's Campaign Says That's OKSeptember 13, 2020Asma KhalidfacebookEmailA man walks out of the Washington County Democratic Party office last week, in the suburbs of Pittsburgh, after taking a Joe Biden yard sign. Because of the coronavirus pandemic, Biden's campaign isn't doing any in-person door-knocking. (AFP via Getty Images)