It was one of the few really cold days of the winter which – for New Hampshire – was remarkably mild this year.

A decent crowd had queued up in the snow hoping to catch sight of Hillary Clinton and, as the queue snaked forward, volunteers promised that everybody would get into the high school where the former First Lady was due to speak.

I went out of curiosity, accompanying my American wife, and we just got in. A handful of people behind were turned away because the hall was full. Apparently this was not the first time this had happened.

It was hardly Mrs Clinton’s fault, but there was an air of palpable disappointment and the episode was symptomatic of some of the underlying problems which could derail her campaign.

Fairly or unfairly, it is the sort of thing which puts people off.

These, of course, are the people who are predisposed to support Mrs Clinton. Once you start talking to those who oppose her, you get into loathing territory.

There are already a fair number of anti-Clinton bumper stickers to be seen – largely on the bumpers of pick-up trucks. The most popular is “Hillary for Prison 2016”. Then there is “Liar, Liar! Pantsuit on fire.”