From Gina Moscato of the Finger Lakes Times:
... “We chose a cross-section of candidates in different parts of the country, different amounts of money, different chances of winning,” Renaud said. “Early on, the candidates were eager for attention. Massa was working out of his garage when we first went to see him. He had one volunteer.”
Massa’s base has since grown, and the Renauds have followed him to debates with Kuhl, meetings with unions and political groups, appearances at various events and other stops along the campaign trail.
“It’s been a unique experience,” Massa said. “It’s been fun to be part of the process.”
In addition to the individual candidates, the Renauds follow many prominent personalities that the candidates come into contact with, including Bill and Hillary Clinton, Rahm Emanuel, Nancy Pelosi, General Wesley Clark, and triple-amputee Senator Max Cleland who serves as a mentor to many of the candidates....”
Apparently these reporters only followed Democrats so most likely the guy was on a mission for the Democratic party, maybe to vet footage for their next campaign. That would explain the incompetence of carrying an old expired press ID instead of a real one or at least a good forgery.