evidence: The group, Stand Up America, has rented a billboard alongside the Kennedy Bridge near McConnell’s office in downtown Louisville, Ky., from Sept. 1 through Sept. 9 that includes an image of McConnell’s face and the message, "Tell Mitch McConnell: Stop blocking election security funding." [...] Democrats and liberal activists on Twitter have continued calling McConnell "Moscow Mitch" since MSNBC’s Joe Scarborough coined the nickname in July after the Kentucky senator torpedoed two measures intended to prevent foreign interference in U.S. elections. McConnell has defended himself against accusations that he has been soft on Russian election interference. And he made clear this week that he does not like the nickname liberals have given him.