MANCHESTER, N.H. — Everything, it seemed, was breaking Marco Rubio’s way.Inside the Holiday Inn Express hotel, where Mr. Rubio and his top aides had camped out in a small conference room to prepare for last Saturday’s Republican debate, marathon practice sessions were interrupted, giddily, by word of new endorsements from former rivals and fawning phone calls from donors.At his campaign headquarters a few miles away, 500 volunteers from across the country had gathered inside an expansive maze of corporate-style offices, requiring so much pizza that stacks of empty boxes nearly touched the ceiling.

Source: How a Debate Misstep Sent Marco Rubio Tumbling in New Hampshire – The New York Times