On a recent Sunday in the heart of Beverly Hills, Calif., the hordes were ready. About 300 people began circling waiters armed with tubes of Pringles and mini-croissants. Trays of finger sandwiches (peanut butter, honey and banana) were in ready supply. Attendees stood about 15 deep in lines as seven bartenders frantically handed out free booze. And it wasn’t even noon. “Can you believe this?” said Nicole Leanne Nelson, an actress, holding a glass of red wine. The lavish spread was courtesy of Netflix , which was promoting its rookie drama “Stranger Things” to a pool of invite-only guests it hoped — but did not know for sure — included Emmy voters. It was just one of about two dozen events that the company had thrown in a rented event space over five weeks, each trying to inspire potential voters to nominate Netflix’s original content for the Emmy television awards. As the streaming services — Amazon held similar parties — battle with traditional cable and broadcast networks, Hollywood is witnessing Emmy campaigning on a scale that industry executives say they have never seen before. The once-staid season now finds studios approving generous budgets for billboards, mail promotions, parties and […]