Posobiec organized a "Rally Against Political Violence" in Washington, D.C., on June 25, 2017, to condemn the shooting of Steve Scalise. Richard Spencer, another alt-right figure who organized a separate, competing rally at the same time, ridiculed Posobiec's event and called it "pathetic". In November 2017, Posobiec encouraged his Twitter followers to target a woman at her workplace after she came forward with allegations that Alabama Senate candidate Roy Moore had attempted to have sex with her when she was 14 years old. In Pennsylvania's 18th congressional district special election in March 2018, Posobiec supported Democrat Conor Lamb over Republican Rick Saccone. Posobiec described Lamb as a "Pro-Trump Dem veteran".