NEWYou can now listen to Fox News articles! A campaign staffer for congressional candidate Stefany Shaheen repeatedly shoved a pastry into the camera of an America Rising tracker as he questioned her about whether she supported Graham Platner's U.S. Senate campaign. Shaheen did not respond.Platner, the presumptive Democratic nominee for Maine's open Senate seat, has faced a string of controversies over the past year. Reports from last month revealed that he exchanged sexually explicit messages with up to a dozen women while married. The scandal follows earlier scrutiny over inflammatory past Reddit posts and a tattoo resembling the Nazi-era Totenkopf...