Iowa State Director Misty Rebik: 'We are the candidate who has a base, and this is the most important thing for caucus night, because this isn't a primary, this isn't a vote. People can't just show up whenever and do it; you need an enthusiastic, excited, trained, disciplined, focused group of people who show up for you on caucus night.'
Of likely Democratic caucus goers who name Sanders as their candidate, 57% say their minds are made up, allowing Sanders to focus on adding to his support versus splitting that effort with making sure supporters don't drift to other camps). For comparison, 27% of poll leader Buttigieg's supporters say the same.
'Sanders folks would run through walls (for him), so they're going to go through walls,' Sterzenbach said. 'It's a good place to be in. His challenge is growth, whereas the challenge for Warren or Buttigieg is about shoring up support.'