Basics

Shifting polls spook people - and the No Thanks campaign might actually quite like the apparent surge for Yes to Scottish independence to get their vote out on the day. Analysts think that's a slight weakness in their position, and presumably, a trip to the polling station actually becomes important if you think you're behind.

But another weakness in the No Thanks ranks is simple mechanics - they're contacting fewer people than Yes, with not much time to improve systems. Stats from the Sunday Times YouGov poll this weekend..